hdfs格式化-hadoop 2.6 namenode创建失败—

hadoop 2.6 namenode创建失败: （前面都正常）
2016-03-23 08:30:10,036 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:212)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1020)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:739)
at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:536)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:595)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:762)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:746)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1438)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1504)
2016-03-23 08:30:10,040 INFO org.mortbay.log: Stopped HttpServer2$SelectChannelConnectorWithSafeStartup@0.0.0.0:50070
2016-03-23 08:30:10,140 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NameNode metrics system...
2016-03-23 08:30:10,141 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system stopped.
2016-03-23 08:30:10,141 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system shutdown complete.
2016-03-23 08:30:10,141 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.
java.io.IOException: NameNode is not formatted.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:212)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1020)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:739)
at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:536)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:595)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:762)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:746)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1438)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1504)
2016-03-23 08:30:10,142 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2016-03-23 08:30:10,144 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at localhost.localdomain/127.0.0.1
************************************************************/; 编辑于：2016.03.23 01:09 发布于：2016.03.23 00:54

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: jiazhuoran

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Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.

写的已经很明确了没有格式化

发布于：2016.03.23 01:01

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: p_max

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: jiazhuoran 多谢老鸟~新手英语不是很好~以后我先自己看看报错能否看懂~; 接近 4 年之前回复

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Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2016-06-14 03:26:51,950 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: local/127.0.0.1:42709. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2016-06-14 03:26:52,951 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: local/127.0.0.1:42709. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2016-06-14 03:26:53,952 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: local/127.0.0.1:42709. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2016-06-14 03:26:54,953 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: local/127.0.0.1:42709. 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Will not attempt to authenticate using SASL (unknown error) 2015-11-13 16:23:59,200 INFO [main-SendThread(node1:2181)] zookeeper.ClientCnxn: Socket connection established to node1/192.168.0.161:2181, initiating session 2015-11-13 16:23:59,211 INFO [main-SendThread(node1:2181)] zookeeper.ClientCnxn: Session establishment complete on server node1/192.168.0.161:2181, sessionid = 0x150feccba590005, negotiated timeout = 40000 2015-11-13 16:23:59,223 INFO [main] zookeeper.RecoverableZooKeeper: Node /hbase already exists and this is not a retry 2015-11-13 16:23:59,245 INFO [RpcServer.responder] ipc.RpcServer: RpcServer.responder: starting 2015-11-13 16:23:59,246 INFO [RpcServer.listener,port=60000] ipc.RpcServer: RpcServer.listener,port=60000: starting 2015-11-13 16:23:59,301 INFO [master:namenode:60000] mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog 2015-11-13 16:23:59,344 INFO [master:namenode:60000] http.HttpServer: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer$QuotingInputFilter) 2015-11-13 16:23:59,346 INFO [master:namenode:60000] http.HttpServer: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context master 2015-11-13 16:23:59,346 INFO [master:namenode:60000] http.HttpServer: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static 2015-11-13 16:23:59,355 INFO [master:namenode:60000] http.HttpServer: Jetty bound to port 60010 2015-11-13 16:23:59,355 INFO [master:namenode:60000] mortbay.log: jetty-6.1.26 2015-11-13 16:23:59,656 INFO [master:namenode:60000] mortbay.log: Started HttpServer$SelectChannelConnectorWithSafeStartup@0.0.0.0:60010 2015-11-13 16:23:59,724 DEBUG [main-EventThread] master.ActiveMasterManager: A master is now available 2015-11-13 16:23:59,725 INFO [master:namenode:60000] master.ActiveMasterManager: Registered Active Master=namenode,60000,1447403038605 2015-11-13 16:23:59,731 INFO [master:namenode:60000] Configuration.deprecation: fs.default.name is deprecated. Instead, use fs.defaultFS 2015-11-13 16:23:59,875 FATAL [master:namenode:60000] master.HMaster: Unhandled exception. Starting shutdown. java.lang.NoSuchMethodError: org.apache.hadoop.fs.FSOutputSummer.<init>(Ljava/util/zip/Checksum;II)V at org.apache.hadoop.hdfs.DFSOutputStream.<init>(DFSOutputStream.java:1342) at org.apache.hadoop.hdfs.DFSOutputStream.<init>(DFSOutputStream.java:1371) at org.apache.hadoop.hdfs.DFSOutputStream.<init>(DFSOutputStream.java:1371) at org.apache.hadoop.hdfs.DFSOutputStream.newStreamForCreate(DFSOutputStream.java:1403) at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1382) at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1307) at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:384) at org.apache.hadoop.hdfs.DistributedFileSystem$6.doCall(DistributedFileSystem.java:380) at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:380) at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:324) at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:908) at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:889) at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:786) at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:775) at org.apache.hadoop.hbase.util.FSUtils.setVersion(FSUtils.java:664) at org.apache.hadoop.hbase.util.FSUtils.setVersion(FSUtils.java:642) at org.apache.hadoop.hbase.util.FSUtils.checkVersion(FSUtils.java:599) at org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:481) at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:154) at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:130) at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:881) at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:684) at java.lang.Thread.run(Thread.java:745) 2015-11-13 16:23:59,876 INFO [master:namenode:60000] master.HMaster: Aborting 2015-11-13 16:23:59,877 DEBUG [master:namenode:60000] master.HMaster: Stopping service threads 2015-11-13 16:23:59,877 INFO [master:namenode:60000] ipc.RpcServer: Stopping server on 60000 2015-11-13 16:23:59,877 INFO [RpcServer.listener,port=60000] ipc.RpcServer: RpcServer.listener,port=60000: stopping 2015-11-13 16:23:59,877 INFO [master:namenode:60000] master.HMaster: Stopping infoServer 2015-11-13 16:23:59,877 INFO [RpcServer.responder] ipc.RpcServer: RpcServer.responder: stopped 2015-11-13 16:23:59,877 INFO [RpcServer.responder] ipc.RpcServer: RpcServer.responder: stopping 2015-11-13 16:23:59,879 INFO [master:namenode:60000] mortbay.log: Stopped HttpServer$SelectChannelConnectorWithSafeStartup@0.0.0.0:60010 2015-11-13 16:23:59,994 INFO [master:namenode:60000] zookeeper.ZooKeeper: Session: 0x150feccba590005 closed 2015-11-13 16:23:59,994 INFO [main-EventThread] zookeeper.ClientCnxn: EventThread shut down 2015-11-13 16:23:59,994 INFO [master:namenode:60000] master.HMaster: HMaster main thread exiting 2015-11-13 16:23:59,995 ERROR [main] master.HMasterCommandLine: Master exiting java.lang.RuntimeException: HMaster Aborted at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:201) at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:135) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126) at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:3062) ``` 每个节点上hadoop和zookeeper的进程都有，hregionserver进程也有，就是主节点没有hmaster，配置文件什么的已经对过很多遍了另外有一个奇怪的问题是，每次系统重启过后，启动hadoop，可以看到相应的进程，但是在外部无法访问http://node0:50070端口，必须要输入iptables -F才可以访问，zookeeper启动过后，如果没有输入过上述命令，zookeeper的MODE也显示不出来，也就是集群模式没有启动成功

hadoop集群搭建完成，其他进程都启动了，但是namenode没有启动，查看日志，报错了: hadoop集群搭建完成，其他进程都启动了，但是namenode没有启动，查看namenode的日志信息，报错了， 192.168.100.70:8485: Call From anlulu-1/192.168.100.10 to anlulu-7:8485 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused 192.168.100.50:8485: Call From anlulu-1/192.168.100.10 to anlulu-5:8485 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused 192.168.100.60:8485: Call From anlulu-1/192.168.100.10 to anlulu-6:8485 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.hdfs.qjournal.client.QuorumException.create(QuorumException.java:81) at org.apache.hadoop.hdfs.qjournal.client.QuorumCall.rethrowException(QuorumCall.java:223) at org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.waitForWriteQuorum(AsyncLoggerSet.java:142) at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.createNewUniqueEpoch(QuorumJournalManager.java:182) at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.recoverUnfinalizedSegments(QuorumJournalManager.java:436) at org.apache.hadoop.hdfs.server.namenode.JournalSet$7.apply(JournalSet.java:590) at org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:359) at org.apache.hadoop.hdfs.server.namenode.JournalSet.recoverUnfinalizedSegments(JournalSet.java:587) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.recoverUnclosedStreams(FSEditLog.java:1330) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startActiveServices(FSNamesystem.java:994) at org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.startActiveServices(NameNode.java:1521) at org.apache.hadoop.hdfs.server.namenode.ha.ActiveState.enterState(ActiveState.java:61) at org.apache.hadoop.hdfs.server.namenode.ha.HAState.setStateInternal(HAState.java:63) at org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.setState(StandbyState.java:49) at org.apache.hadoop.hdfs.server.namenode.NameNode.transitionToActive(NameNode.java:1399) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.transitionToActive(NameNodeRpcServer.java:1160) at org.apache.hadoop.ha.protocolPB.HAServiceProtocolServerSideTranslatorPB.transitionToActive(HAServiceProtocolServerSideTranslatorPB.java:107) at org.apache.hadoop.ha.proto.HAServiceProtocolProtos$HAServiceProtocolService$2.callBlockingMethod(HAServiceProtocolProtos.java:4460) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007) 2015-08-20 00:41:50,962 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1 2015-08-20 00:41:50,966 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG: ``` ```

Hadoop 2.6.2 Configuration: hadoop$ sbin/start-dfs.sh 然后报错，求高手解决啊 Incorrect configuration: namenode address dfs.namenode.servicerpc-address or dfs.namenode.rpc-address is not configured. Starting namenodes on [OpenJDK Server VM warning: You have loaded library /usr/local/hadoop/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now. It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'. 2015-11-27 04:47:02,913 WARN [main] util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable] Error: Cannot find configuration directory: /etc/hadoop Error: Cannot find configuration directory: /etc/hadoop Starting secondary namenodes [OpenJDK Server VM warning: You have loaded library /usr/local/hadoop/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now. It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'. 2015-11-27 04:47:04,891 WARN [main] util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 0.0.0.0] Error: Cannot find configuration directory: /etc/hadoop

重新启动hadoop失败 webapps/hdfs not found in CLASSPATH: 最近需要在16节点配置hbase 环境：hadoop2.6+zookeeper3.4.6+hbase0.98.9 ubuntu12.04 server 64bit jdk 1.8.0_11 hadoop 配置的1个namenode和15个datanode zookeeper配置的3台 hbase一个Hmaster15个HRegion 开始时配置没问题，在hbase上跑东西也没问题需要改变节点数量，所以关闭hbase，然后关闭zookeeper，最后关闭hadoop集群不过我没有format那个hadoop的namenode 然后我就遇到hadoop的namenode起不起来的问题请问有没有人对这个问题有研究啊？我看hdfs的启动日志写的是： java.io.FileNotFoundException: webapps/hdfs not found in CLASSPATH 在网上也没看到类似问题和解决方案怀疑是hbase集群关闭时是不是需要format 或者配置文件哪里不对我查了关于classpath的hadoop配置文件，只有一个Yarn-site.xml的yarn.application.classpath那个我是注释掉的，应该也不是这个问题的吧尝试重新format过namenode节点，重启还是不行尝试过重新把hadoop删掉重新配置，不行尝试改hdfs的启动脚本，在运行时手动export加上webapps/hdfs文件夹，不行请问各位有没有解决办法啊？或者这个问题的大致思路？启动日志如下：${HADOOP_HOME}//ogs/hadoop-ubuntu-namenode-m1.log ``` 2015-02-01 22:45:43,870 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = m1/172.18.9.100 STARTUP_MSG: args = [] STARTUP_MSG: version = 2.2.0 STARTUP_MSG: classpath = /home/ubuntu/hadoop/hadoop-2.6.0/etc/hadoop:/home/ubuntu/hadoop/hadoop-2.6.0/share/hadoop/common/lib/asm-3$ STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common -r 1529768; compiled by 'hortonmu' on 2013-10-07T06:28Z STARTUP_MSG: java = 1.8.0_11 ************************************************************/ 2015-02-01 22:45:43,887 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT] 2015-02-01 22:45:44,515 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties 2015-02-01 22:45:44,670 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s). 2015-02-01 22:45:44,671 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started 2015-02-01 22:45:50,066 INFO org.mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4j$ 2015-02-01 22:45:50,069 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NameNode metrics system... 2015-02-01 22:45:50,070 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system stopped. 2015-02-01 22:45:50,070 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system shutdown complete. 2015-02-01 22:45:50,071 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join **java.io.FileNotFoundException: webapps/hdfs not found in CLASSPATH **** at org.apache.hadoop.http.HttpServer.getWebAppsPath(HttpServer.java:585) at org.apache.hadoop.http.HttpServer.<init>(HttpServer.java:251) at org.apache.hadoop.http.HttpServer.<init>(HttpServer.java:174) at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer$1.<init>(NameNodeHttpServer.java:76) at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:74) at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:626) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:488) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:684) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:669) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1254) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320) 2015-02-01 22:45:50,075 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1 2015-02-01 22:45:50,078 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at m1/172.18.9.100 ************************************************************/ ```

hadoop集群搭建：Cannot assign requested address: 问题： 2016-09-05 16:40:03,320 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join java.net.BindException: Problem binding to [master:9000] java.net.BindException: Cannot assign requested address; For more details see: http://wiki.apache.org/hadoop/BindException at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:719) at org.apache.hadoop.ipc.Server.bind(Server.java:419) at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:561) at org.apache.hadoop.ipc.Server.<init>(Server.java:2166) at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:897) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:505) at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:480) at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:742) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.<init>(NameNodeRpcServer.java:311) at org.apache.hadoop.hdfs.server.namenode.NameNode.createRpcServer(NameNode.java:614) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:587) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:751) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:735) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1407) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1473) -------------------------------------------------------------------------------------------------- 采用的是云服务搭建的集群，用的是公网地址。 ifconfig后出现： eth0 Link encap:Ethernet HWaddr 52:54:00:C6:39:03 inet addr:10.141.88.213 Bcast:10.141.127.255 Mask:255.255.192.0 但我的hosts是： 127.0.0.1 localhost localhost.localdomain 123.207.161.186 master 123.207.145.16 slave1 123.207.140.169 slave2 如果配置私网地址，主机之间ping不通。

hadoop机架感知不能加载类: 我已经在core-site.xml配置文件中配置了net.topology.node.switch.mapping.impl。并把jar包放在了/opt/modules/hadoop-2.7.2/share/hadoop/common/lib目录。启动后出现如下错误。hadoop哪个目录可以启动时加载jar包呢？ java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class >com.learning.rackawareness.RackAwareness not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2227) at org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.<init>(DatanodeManager.java:208) at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.<init>(BlockManager.java:268) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:737) at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:246) at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:192) at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:671) Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class >com.learning.rackawareness.RackAwareness not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2219) ... 6 more Caused by: java.lang.ClassNotFoundException: Class >com.learning.rackawareness.RackAwareness not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193) ... 7 more 2019-10-07 15:23:41,958 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Stopping services started for active state 2019-10-07 15:23:41,970 INFO org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: SHUTDOWN_MSG:

hadoop2.x集群部署一种一个datanode无法启动: Exception in secureMain java.net.UnknownHostException: node1: node1 at java.net.InetAddress.getLocalHost(InetAddress.java:1473) at org.apache.hadoop.security.SecurityUtil.getLocalHostName(SecurityUtil.java:187) at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:207) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2153) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2202) at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2378) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2402) Caused by: java.net.UnknownHostException: node1 at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901) at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293) at java.net.InetAddress.getLocalHost(InetAddress.java:1469) ... 6 more 2015-01-16 09:08:54,152 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1 2015-01-16 09:08:54,164 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down DataNode at java.net.UnknownHostException: node1: node1 ************************************************************/ 环境ubuntu,hadoop2.6,jdk7 [排比句](http://www.zaojuzi.com/paibiju/ "")部署三台虚拟机一台namenode,两台datanode;/etc/hostname 都已经配置分布为master,node1,node2 /etc/hosts配置为： 27.0.0.1 localhost 127.0.1.1 ubuntu.localdomain ubuntu # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters 192.168.184.129 master 192.168.184.130 node1 192.168.184.131 node2 hadoop/etc/hadoo/slaves配置为[造句](http://www.zaojuzi.com/ "")： node1 node2 core-site.xml配置为： <configuration> <property> <name>fs.defaultFS</name> <value>hdfs://master:9000/</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/home/yangwq/hadoop-2.6.0/temp</value> <description>A base for other temporary directories.</description> </property> </configuration> hdfs-site.xml配置为： <configuration> <property> <name>dfs.replication</name> <value>2</value> </property> <property> <name>dfs.namenode.name.dir</name> <value>file:/home/yangwq/hadoop-2.6.0/dfs/name</value> <final>true</final> </property> <property> <name>dfs.datanode.data.dir</name> <value>file:/home/yangwq/hadoop-2.6.0/dfs/data</value> </property> </configuration> mapred-site.xml配置为： <configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> <final>true</final> </property> </configuration> yarn-site.xml配置为： <configuration>  <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <property> <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name> <value>org.apache.hadoop.mapred.ShuffleHandler</value> </property>  <property> <name>yarn.resourcemanager.hostname</name> <value>master</value> </property> </configuration> 在启动的时候node1节点的datanode一直无法启动，同时通过ssh登录各节点都是正常。

hadoop mapreduce报错: java.lang.RuntimeException: Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive-root/root/935624e0-aea4-47d6-842c-32d42d506d4b/hive_2017-02-16_04-42-39_689_6740522155632742535-1/-mr-10004/7b69d4eb-6fe2-4c55-a6cd-ba4dcd5c2054/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and 2 node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1571) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:725) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2073) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1744) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1453) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1171) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1161) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:232) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399) at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.util.RunJar.run(RunJar.java:221) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive-root/root/935624e0-aea4-47d6-842c-32d42d506d4b/hive_2017-02-16_04-42-39_689_6740522155632742535-1/-mr-10004/7b69d4eb-6fe2-4c55-a6cd-ba4dcd5c2054/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and 2 node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1571) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:725) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043) at org.apache.hadoop.ipc.Client.call(Client.java:1475) at org.apache.hadoop.ipc.Client.call(Client.java:1412) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy31.addBlock(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:418) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy32.addBlock(Unknown Source) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1455) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1251) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:448) Job Submission failed with exception 'java.lang.RuntimeException(Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive-root/root/935624e0-aea4-47d6-842c-32d42d506d4b/hive_2017-02-16_04-42-39_689_6740522155632742535-1/-mr-10004/7b69d4eb-6fe2-4c55-a6cd-ba4dcd5c2054/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and 2 node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1571) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:725) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043) )' FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask. Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive-root/root/935624e0-aea4-47d6-842c-32d42d506d4b/hive_2017-02-16_04-42-39_689_6740522155632742535-1/-mr-10004/7b69d4eb-6fe2-4c55-a6cd-ba4dcd5c2054/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 2 datanode(s) running and 2 node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1571) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:725) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)

怎么让配置HA的hadoop启动时启动固定的namenode: hadoop2.6配了高可用，但是启动时namenode是随机active的，有没有办法启动hadoop时能指定固定的namenode，挂了才启用备用namenode

Hive中向表中插入数据出错，请大神们帮忙解决一下，谢谢了: WARNING: Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases. Query ID = root_20190413230214_49834037-bff2-4fb9-b935-94eff9780c09 Total jobs = 3 Launching Job 1 out of 3 Number of reduce tasks is set to 0 since there's no reduce operator java.lang.RuntimeException: Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive/root/998d79c6-e750-4680-a08d-efc1714952ef/hive_2019-04-13_23-02-14_924_6242126447268871177-1/-mr-10004/b7f8c78b-2559-4e30-b053-ae37b4f49a05/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1814) at org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:265) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2569) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:846) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:510) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606) at org.apache.hadoop.hive.ql.exec.Utilities.setBaseWork(Utilities.java:624) at org.apache.hadoop.hive.ql.exec.Utilities.setMapWork(Utilities.java:549) at org.apache.hadoop.hive.ql.exec.Utilities.setMapRedWork(Utilities.java:541) at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.execute(ExecDriver.java:350) at org.apache.hadoop.hive.ql.exec.mr.MapRedTask.execute(MapRedTask.java:151) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:199) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:100) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2183) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1839) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1526) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1237) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1227) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:184) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403) at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:821) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.util.RunJar.run(RunJar.java:244) at org.apache.hadoop.util.RunJar.main(RunJar.java:158) Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive/root/998d79c6-e750-4680-a08d-efc1714952ef/hive_2019-04-13_23-02-14_924_6242126447268871177-1/-mr-10004/b7f8c78b-2559-4e30-b053-ae37b4f49a05/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1814) at org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:265) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2569) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:846) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:510) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606) at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1507) at org.apache.hadoop.ipc.Client.call(Client.java:1453) at org.apache.hadoop.ipc.Client.call(Client.java:1363) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:227) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116) at com.sun.proxy.$Proxy29.addBlock(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:444) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157) at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359) at com.sun.proxy.$Proxy30.addBlock(Unknown Source) at org.apache.hadoop.hdfs.DataStreamer.locateFollowingBlock(DataStreamer.java:1845) at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1645) at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:710) Job Submission failed with exception 'java.lang.RuntimeException(Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive/root/998d79c6-e750-4680-a08d-efc1714952ef/hive_2019-04-13_23-02-14_924_6242126447268871177-1/-mr-10004/b7f8c78b-2559-4e30-b053-ae37b4f49a05/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1814) at org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:265) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2569) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:846) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:510) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606) )' FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask. Error caching map.xml: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /tmp/hive/root/998d79c6-e750-4680-a08d-efc1714952ef/hive_2019-04-13_23-02-14_924_6242126447268871177-1/-mr-10004/b7f8c78b-2559-4e30-b053-ae37b4f49a05/map.xml could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1814) at org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:265) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2569) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:846) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:510) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606)

hadoop 格式化namenode报错: ubuntu 16.04 hadoop 2.6.0 初始化 hadoop namenode -format 报错说找不到namenode,但是我的环境变量配置的好像没问题啊。。 ![图片说明](https://img-ask.csdn.net/upload/201609/11/1473599781_110258.png) ![图片说明](https://img-ask.csdn.net/upload/201609/11/1473599831_458409.png) 求大神赐教

HDFS启动警告 WARN util.NativeCodeLoader: 启动HDFS报入校警告： [hadoop@hadoop tmp]$ start-dfs.sh 15/02/02 20:39:49 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable Starting namenodes on [hadoop] hadoop: starting namenode, logging to /usr/hadoop-2.5.2/logs/hadoop-hadoop-namenode-hadoop.out localhost: starting datanode, logging to /usr/hadoop-2.5.2/logs/hadoop-hadoop-datanode-hadoop.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /usr/hadoop-2.5.2/logs/hadoop-hadoop-secondarynamenode-hadoop.out 15/02/02 20:40:08 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 网上查说是liunx版本问题 [hadoop@hadoop ~]$ uname -a Linux hadoop 2.6.32-431.el6.i686 #1 SMP Fri Nov 22 00:26:36 UTC 2013 i686 i686 i386 GNU/Linux JDK版本 [hadoop@hadoop ~]$ java -version java version "1.6.0_24" Java(TM) SE Runtime Environment (build 1.6.0_24-b07) Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode, sharing) Hadoop版本： [hadoop@hadoop ~]$ hadoop version Hadoop 2.5.2 Subversion https://git-wip-us.apache.org/repos/asf/hadoop.git -r cc72e9b000545b86b75a61f4835eb86d57bfafc0 Compiled by jenkins on 2014-11-14T23:45Z Compiled with protoc 2.5.0 From source with checksum df7537a4faa4658983d397abf4514320 This command was run using /usr/hadoop-2.5.2/share/hadoop/common/hadoop-common-2.5.2.jar 请高手帮忙看下

新手，hadoop上运行wordcount程序报错: 运行的环境是：Ubuntu14.04+hadoop2.6.1 用的是virtualBox虚拟机，然后安装了一个master和三个slave节点 hadoop是可以成功启动的，没有任何问题在Ubuntu安装了eclipse，用java写了word count的程序，源码如下： ``` package wordcount; import java.io.IOException; import java.util.StringTokenizer; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.Mapper; import org.apache.hadoop.mapreduce.Reducer; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; /** * @author * @version 创建时间：2017年9月9日上午8:50:51 类说明 */ public class Wordcount { public static class TokenizerMapper extends Mapper<LongWritable, Text, Text, IntWritable> { private final static IntWritable one = new IntWritable(1); private Text word = new Text(); protected void map(LongWritable key, Text value, Mapper<LongWritable, Text, Text, IntWritable>.Context context) throws IOException, InterruptedException { StringTokenizer line = new StringTokenizer(value.toString()); while (line.hasMoreTokens()) { word.set(line.nextToken()); context.write(word, one); } } } public static class IntSumReducer extends Reducer<Text, IntWritable, Text, IntWritable> { private IntWritable result = new IntWritable(); protected void reduce(Text key, Iterable<IntWritable> values, Reducer<Text, IntWritable, Text, IntWritable>.Context context) throws IOException, InterruptedException { int sum = 0; for (IntWritable obj : values) { sum += obj.get(); } result.set(sum); context.write(key, result); } } public static void main(String[] args) throws Exception { Configuration conf = new Configuration(); Job job = Job.getInstance(conf, "word count"); job.setJarByClass(Wordcount.class); job.setMapperClass(TokenizerMapper.class); job.setCombinerClass(IntSumReducer.class); job.setReducerClass(IntSumReducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(IntWritable.class); FileInputFormat.addInputPath(job, new Path("hdfs://master:9000/user/hduser/demo/test.txt")); FileOutputFormat.setOutputPath(job, new Path("hdfs://master:9000/user/hduser/demo/wordcount")); //FileInputFormat.addInputPath(job, new Path(args[0])); //FileOutputFormat.setOutputPath(job, new Path(args[1])); System.exit(job.waitForCompletion(true) ? 0 : 1); } } ``` 启动hadoop后，在eclipse中直接运行上面的程序，运行成功，生成了wordcount文件夹，里面有_SUCCESS文件，也有统计的结果文件然后我想把程序打包成jar文件来运行，先把上面程序中的： ``` FileInputFormat.addInputPath(job, new Path("hdfs://master:9000/user/hduser/demo/test.txt")); FileOutputFormat.setOutputPath(job, new Path("hdfs://master:9000/user/hduser/demo/wordcount")); ``` 改成如下： ``` FileInputFormat.addInputPath(job, new Path(args[0])); FileOutputFormat.setOutputPath(job, new Path(args[1])); ``` 就是通过终端输入这两个参数用eclipse的export打包成jar文件，后在终端输入： ``` hadoop jar wordcount.jar wordcount.Wordcount hdfs://master:9000/user/hduser/demo/test.txt hdfs://master:9000/user/hduser/demo/wordcount ``` 运行就报错了，报错情况如下： ``` 17/09/09 11:18:53 INFO client.RMProxy: Connecting to ResourceManager at master/192.168.56.100:8050 17/09/09 11:18:54 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this. 17/09/09 11:18:55 INFO input.FileInputFormat: Total input paths to process : 1 17/09/09 11:18:55 INFO mapreduce.JobSubmitter: number of splits:1 17/09/09 11:18:55 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1504926710828_0001 17/09/09 11:18:56 INFO impl.YarnClientImpl: Submitted application application_1504926710828_0001 17/09/09 11:18:56 INFO mapreduce.Job: The url to track the job: http://master:8088/proxy/application_1504926710828_0001/ 17/09/09 11:18:56 INFO mapreduce.Job: Running job: job_1504926710828_0001 17/09/09 11:19:14 INFO mapreduce.Job: Job job_1504926710828_0001 running in uber mode : false 17/09/09 11:19:14 INFO mapreduce.Job: map 0% reduce 0% 17/09/09 11:19:14 INFO mapreduce.Job: Job job_1504926710828_0001 failed with state FAILED due to: Application application_1504926710828_0001 failed 2 times due to AM Container for appattempt_1504926710828_0001_000002 exited with exitCode: 1 For more detailed output, check application tracking page:http://master:8088/proxy/application_1504926710828_0001/Then, click on links to logs of each attempt. Diagnostics: Exception from container-launch. Container id: container_1504926710828_0001_02_000001 Exit code: 1 Stack trace: ExitCodeException exitCode=1: at org.apache.hadoop.util.Shell.runCommand(Shell.java:538) at org.apache.hadoop.util.Shell.run(Shell.java:455) at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715) at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:211) at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:302) at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:82) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622) at java.lang.Thread.run(Thread.java:748) Container exited with a non-zero exit code 1 Failing this attempt. Failing the application. 17/09/09 11:19:14 INFO mapreduce.Job: Counters: 0 ``` 去查了下日志文件， ``` 2017-09-09 11:18:55,869 INFO org.apache.hadoop.hdfs.StateChange: DIR* completeFile: /tmp/hadoop-yarn/staging/hduser/.staging/job_1504926710828_0001/job.xml is closed by DFSClient_NONMAPREDUCE_-1306163227_1 2017-09-09 11:18:59,502 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Rescanning after 30000 milliseconds 2017-09-09 11:18:59,503 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s). 2017-09-09 11:19:12,241 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 9000, call org.apache.hadoop.hdfs.protocol.ClientProtocol.getBlockLocations from 192.168.56.102:53610 Call#7 Retry#0: java.io.FileNotFoundException: File does not exist: /tmp/hadoop-yarn/staging/hduser/.staging/job_1504926710828_0001/job_1504926710828_0001_1.jhist 2017-09-09 11:19:12,293 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4 on 9000, call org.apache.hadoop.hdfs.protocol.ClientProtocol.getBlockLocations from 192.168.56.102:53610 Call#8 Retry#0: java.io.FileNotFoundException: File does not exist: /tmp/hadoop-yarn/staging/hduser/.staging/job_1504926710828_0001/job_1504926710828_0001_1.jhist 2017-09-09 11:19:29,502 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Rescanning after 30000 milliseconds 2017-09-09 11:19:29,502 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s). 2017-09-09 11:19:42,634 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Roll Edit Log from 192.168.56.100 2017-09-09 11:19:42,634 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Rolling edit logs 2017-09-09 11:19:42,634 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Ending log segment 29 2017-09-09 11:19:42,635 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Number of transactions: 40 Total time for transactions(ms): 6 Number of transactions batched in Syncs: 0 Number of syncs: 27 SyncTimes(ms): 545 2017-09-09 11:19:42,704 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Number of transactions: 40 Total time for transactions(ms): 6 Number of transactions batched in Syncs: 0 Number of syncs: 28 SyncTimes(ms): 613 2017-09-09 11:19:42,704 INFO org.apache.hadoop.hdfs.server.namenode.FileJournalManager: Finalizing edits file /usr/local/hadoop/hadoop_data/hdfs/namenode/current/edits_inprogress_0000000000000000029 -> /usr/local/hadoop/hadoop_data/hdfs/namenode/current/edits_0000000000000000029-0000000000000000068 2017-09-09 11:19:42,704 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Starting log segment at 69 2017-09-09 11:19:59,503 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Rescanning after 30001 milliseconds 2017-09-09 11:19:59,503 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s). 2017-09-09 11:20:29,504 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Rescanning after 30001 milliseconds 2017-09-09 11:20:29,504 INFO org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor: Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s). 2017-09-09 11:20:42,759 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Roll Edit Log from 192.168.56.100 2017-09-09 11:20:42,759 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Rolling edit logs 2017-09-09 11:20:42,759 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Ending log segment 69 2017-09-09 11:20:42,759 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Number of transactions: 2 Total time for transactions(ms): 0 Number of transactions batched in Syncs: 0 Number of syncs: 2 SyncTimes(ms): 24 2017-09-09 11:20:42,791 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: Number of transactions: 2 Total time for transactions(ms): 0 Number of transactions batched in Syncs: 0 Number of syncs: 3 SyncTimes(ms): 56 ``` 在这里面报了一个错误： ``` java.io.FileNotFoundException: File does not exist: /tmp/hadoop-yarn/staging/hduser/.staging/job_1504926710828_0001/job_1504926710828_0001_1.jhist ``` 新手，不知道怎么办了

小白求助：hadoop集群slaves上的NodeManager进程自动断: s100 master s101 slaves s102 slaves s103 slaves namenode -format 后start-all.sh 可以在slaves 看到 NodeManager 进程但是在webui上通过http://S100:50070看不到datenode节点信息查看节点slaves上的 yarn-root-nodemanager-S101.log日志发现有报错信息 ``` 2019-06-01 02:20:02,593 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:03,596 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:04,603 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:05,609 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:06,611 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:07,616 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:08,620 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: S100/192.168.17.100:8031. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS) 2019-06-01 02:20:08,624 ERROR org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl: Unexpected error starting NodeStatusUpdater java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.GeneratedConstructorAccessor20.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732) at org.apache.hadoop.ipc.Client.call(Client.java:1480) at org.apache.hadoop.ipc.Client.call(Client.java:1413) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy73.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:68) at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy74.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:271) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:197) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:272) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:496) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:543) Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495) at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:615) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:713) at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:376) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529) at org.apache.hadoop.ipc.Client.call(Client.java:1452) ... 18 more 2019-06-01 02:20:08,632 INFO org.apache.hadoop.service.AbstractService: Service org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl failed in state STARTED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:203) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:272) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:496) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:543) Caused by: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.GeneratedConstructorAccessor20.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732) at org.apache.hadoop.ipc.Client.call(Client.java:1480) at org.apache.hadoop.ipc.Client.call(Client.java:1413) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy73.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:68) at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy74.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:271) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:197) ... 6 more Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495) at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:615) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:713) at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:376) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529) at org.apache.hadoop.ipc.Client.call(Client.java:1452) ... 18 more 2019-06-01 02:20:08,638 INFO org.apache.hadoop.service.AbstractService: Service NodeManager failed in state STARTED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:203) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:272) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:496) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:543) Caused by: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.GeneratedConstructorAccessor20.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732) at org.apache.hadoop.ipc.Client.call(Client.java:1480) at org.apache.hadoop.ipc.Client.call(Client.java:1413) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy73.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:68) at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy74.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:271) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:197) ... 6 more Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495) at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:615) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:713) at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:376) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529) at org.apache.hadoop.ipc.Client.call(Client.java:1452) ... 18 more 2019-06-01 02:20:08,716 INFO org.mortbay.log: Stopped HttpServer2$SelectChannelConnectorWithSafeStartup@0.0.0.0:8042 2019-06-01 02:20:08,727 INFO org.apache.hadoop.ipc.Server: Stopping server on 39863 2019-06-01 02:20:08,742 INFO org.apache.hadoop.ipc.Server: Stopping IPC Server listener on 39863 2019-06-01 02:20:08,748 INFO org.apache.hadoop.ipc.Server: Stopping IPC Server Responder 2019-06-01 02:20:08,749 WARN org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl: org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl is interrupted. Exiting. 2019-06-01 02:20:08,790 INFO org.apache.hadoop.ipc.Server: Stopping server on 8040 2019-06-01 02:20:08,796 INFO org.apache.hadoop.ipc.Server: Stopping IPC Server listener on 8040 2019-06-01 02:20:08,796 INFO org.apache.hadoop.ipc.Server: Stopping IPC Server Responder 2019-06-01 02:20:08,836 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: Public cache exiting 2019-06-01 02:20:08,840 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NodeManager metrics system... 2019-06-01 02:20:08,842 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NodeManager metrics system stopped. 2019-06-01 02:20:08,843 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NodeManager metrics system shutdown complete. 2019-06-01 02:20:08,843 FATAL org.apache.hadoop.yarn.server.nodemanager.NodeManager: Error starting NodeManager org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:203) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:272) at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:496) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:543) Caused by: java.net.ConnectException: Call From S101/127.0.0.1 to S100:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused at sun.reflect.GeneratedConstructorAccessor20.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792) at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:732) at org.apache.hadoop.ipc.Client.call(Client.java:1480) at org.apache.hadoop.ipc.Client.call(Client.java:1413) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy73.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:68) at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy74.registerNodeManager(Unknown Source) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:271) at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:197) ... 6 more Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495) at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:615) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:713) at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:376) at org.apache.hadoop.ipc.Client.getConnection(Client.java:1529) at org.apache.hadoop.ipc.Client.call(Client.java:1452) ... 18 more 2019-06-01 02:20:08,857 INFO org.apache.hadoop.yarn.server.nodemanager.NodeManager: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NodeManager at S101/127.0.0.1 ************************************************************/ ``` 哪位大佬帮忙看看，小弟先谢过如下是slaves 的配置 yarn-site.xml ``` <configuration> <property> <name>yarn.resourcemanager.hostname</name> <value>S100</value> </property> <property> <name>yarn.nodemanager.local-dirs</name> <value>/disk1/nm-local-dir,/disk2/nm-local-dir</value> </property> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce.shuffle</value> </property> <property> <name>yarn.nodemanager.resource.memory-mb</name> <value>16384</value> </property> <property> <name>yarn.nodemanager.resource.cpu-vcores</name> <value>16</value> </property> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <property> <name>yarn.resourcemanager.address</name> <value>S100:8032</value> </property> <property> <name>yarn.resourcemanager.scheduler.address</name> <value>S100:8030</value> </property> <property> <name>yarn.resourcemanager.resource-tracker.address</name> <value>S100:8031</value> </property> </configuration> ``` core-site.xml ``` <configuration> <property> <name>fs.defaultFS</name> <value>hdfs://S100:8020/</value> </property> </configuration> ```

Hadoop搭建环境报错，实在找不到方法: 找了很久都不知道解决方法，大家帮帮我吧，谢谢~ STARTUP_MSG: java = 1.6.0_45 ************************************************************/ 15/11/28 08:52:23 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT] 15/11/28 08:52:23 INFO namenode.NameNode: createNameNode [-format] 15/11/28 08:52:24 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable Formatting using clusterid: CID-0f5cc549-bfbb-45b2-a735-c3500a2e83cf 15/11/28 08:52:25 INFO namenode.FSNamesystem: fsLock is fair:true 15/11/28 08:52:25 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000 15/11/28 08:52:25 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true 15/11/28 08:52:25 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000 15/11/28 08:52:25 INFO blockmanagement.BlockManager: The block deletion will start around 2015 Nov 28 08:52:25 15/11/28 08:52:25 INFO util.GSet: Computing capacity for map BlocksMap 15/11/28 08:52:25 INFO util.GSet: VM type = 32-bit 15/11/28 08:52:25 INFO util.GSet: 2.0% max memory 966.7 MB = 19.3 MB 15/11/28 08:52:25 INFO util.GSet: capacity = 2^22 = 4194304 entries 15/11/28 08:52:25 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false 15/11/28 08:52:25 INFO blockmanagement.BlockManager: defaultReplication = 1 15/11/28 08:52:25 INFO blockmanagement.BlockManager: maxReplication = 512 15/11/28 08:52:25 INFO blockmanagement.BlockManager: minReplication = 1 15/11/28 08:52:25 INFO blockmanagement.BlockManager: maxReplicationStreams = 2 15/11/28 08:52:25 INFO blockmanagement.BlockManager: shouldCheckForEnoughRacks = false 15/11/28 08:52:25 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000 15/11/28 08:52:25 INFO blockmanagement.BlockManager: encryptDataTransfer = false 15/11/28 08:52:25 INFO blockmanagement.BlockManager: maxNumBlocksToLog = 1000 15/11/28 08:52:25 INFO namenode.FSNamesystem: fsOwner = hadoop (auth:SIMPLE) 15/11/28 08:52:25 INFO namenode.FSNamesystem: supergroup = supergroup 15/11/28 08:52:25 INFO namenode.FSNamesystem: isPermissionEnabled = false 15/11/28 08:52:25 INFO namenode.FSNamesystem: HA Enabled: false 15/11/28 08:52:25 INFO namenode.FSNamesystem: Append Enabled: true 15/11/28 08:52:26 INFO util.GSet: Computing capacity for map INodeMap 15/11/28 08:52:26 INFO util.GSet: VM type = 32-bit 15/11/28 08:52:26 INFO util.GSet: 1.0% max memory 966.7 MB = 9.7 MB 15/11/28 08:52:26 INFO util.GSet: capacity = 2^21 = 2097152 entries 15/11/28 08:52:26 INFO namenode.NameNode: Caching file names occuring more than 10 times 15/11/28 08:52:26 INFO util.GSet: Computing capacity for map cachedBlocks 15/11/28 08:52:26 INFO util.GSet: VM type = 32-bit 15/11/28 08:52:26 INFO util.GSet: 0.25% max memory 966.7 MB = 2.4 MB 15/11/28 08:52:26 INFO util.GSet: capacity = 2^19 = 524288 entries 15/11/28 08:52:26 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033 15/11/28 08:52:26 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0 15/11/28 08:52:26 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension = 30000 15/11/28 08:52:26 INFO namenode.FSNamesystem: Retry cache on namenode is enabled 15/11/28 08:52:26 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis 15/11/28 08:52:26 INFO util.GSet: Computing capacity for map NameNodeRetryCache 15/11/28 08:52:26 INFO util.GSet: VM type = 32-bit 15/11/28 08:52:26 INFO util.GSet: 0.029999999329447746% max memory 966.7 MB = 297.0 KB 15/11/28 08:52:26 INFO util.GSet: capacity = 2^16 = 65536 entries 15/11/28 08:52:26 INFO namenode.NNConf: ACLs enabled? false 15/11/28 08:52:26 INFO namenode.NNConf: XAttrs enabled? true 15/11/28 08:52:26 INFO namenode.NNConf: Maximum size of an xattr: 16384 15/11/28 08:52:26 FATAL namenode.NameNode: Exception in namenode join java.lang.IllegalArgumentException: URI has an authority component at java.io.File.<init>(File.java:368) at org.apache.hadoop.hdfs.server.namenode.NNStorage.getStorageDirectory(NNStorage.java:327) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournals(FSEditLog.java:261) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournalsForWrite(FSEditLog.java:233) at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:920) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1354) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1473) 15/11/28 08:52:26 INFO util.ExitUtil: Exiting with status 1 15/11/28 08:52:26 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at hadoop/192.168.131.2 ************************************************************/

hadoop集群，hdfs dfs -ls / 目录出错: 搭建了一个hadoop集群，用hdfs dfs -ls /命令，列出的是本地系统的根目录。用hdfs dfs -ls hdfs://servicename/ 列出的目录才是hdfs上的目录，可能是什么原因？执行hive创建的目录也是在本地系统目录上。集群的配置如下集群规划：主机名 IP 安装的软件运行的进程 hadoop01 192.168.175.129 jdk、hadoop NameNode、DFSZKFailoverController(zkfc) hadoop02 192.168.175.127 jdk、hadoop NameNode、DFSZKFailoverController(zkfc) hadoop03 192.168.175.126 jdk、hadoop ResourceManager hadoop04 192.168.175.125 jdk、hadoop ResourceManager hadoop05 192.168.175.124 jdk、hadoop、zookeeper DataNode、NodeManager、JournalNode、QuorumPeerMain hadoop06 192.168.175.123 jdk、hadoop、zookeeper DataNode、NodeManager、JournalNode、QuorumPeerMain hadoop07 192.168.175.122 jdk、hadoop、zookeeper DataNode、NodeManager、JournalNode、QuorumPeerMain windows:NLB LINUX:LVS 1.liunx虚拟机安装后，虚拟机连接模式要选择host-only模式。然后分配IP(以hadoop01为例) DEVICE="eth0" BOOTPROTO="static" ### HWADDR="00:0C:29:3C:BF:E7" IPV6INIT="yes" NM_CONTROLLED="yes" ONBOOT="yes" TYPE="Ethernet" UUID="ce22eeca-ecde-4536-8cc2-ef0dc36d4a8c" IPADDR="192.168.175.129" ### NETMASK="255.255.255.0" ### GATEWAY="192.168.175.1" ### 2.修改主机名： vim /etc/sysconfig/network NETWORKING=yes HOSTNAME=hadoop01 ### 3.关闭防火墙： #查看防火墙状态 service iptables status #关闭防火墙 service iptables stop #查看防火墙开机启动状态 chkconfig iptables --list #关闭防火墙开机启动 chkconfig iptables off 4.免登录配置： #生成ssh免登陆密钥 #进入到我的home目录 cd ~/.ssh ssh-keygen -t rsa （四个回车）执行完这个命令后，会生成两个文件id_rsa（私钥）、id_rsa.pub（公钥）将公钥拷贝到要免登陆的机器上 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys 或若报错ssh-copy-id: ERROR: No identities found，是因为找不到公钥路径,加上-i然后再加上路径即可则用 $ ssh-copy-id -i ~/.ssh/id_rsa.pub user@remote_ip 5.主机IP映射关系(/etc/hosts每台机器上都要配置全部映射关系) 192.168.175.129 hadoop01 192.168.175.127 hadoop02 192.168.175.126 hadoop03 192.168.175.125 hadoop04 192.168.175.124 hadoop05 192.168.175.123 hadoop06 192.168.175.122 hadoop07 6./etc/profile下配置java环境变量： export JAVA_HOME=/lichangwu/jdk1.7.0_79 export PATH=$PATH:$JAVA_HOME/bin #刷新profile source /etc/profile 若版本报错,vi /etc/selinux/config,设置SELINUX=disabled,然后重启虚拟机 7.安装zookeeper: 1.安装配置zooekeeper集群（在hadoop05上）: 1.1解压 tar -zxvf zookeeper-3.4.6.tar.gz -C /lichangwu/ 1.2修改配置 cd /lichangwu/zookeeper-3.4.6/conf/ cp zoo_sample.cfg zoo.cfg vim zoo.cfg 修改：dataDir=/lichangwu/zookeeper-3.4.6/tmp 在最后添加： server.1=hadoop05:2888:3888 server.2=hadoop06:2888:3888 server.3=hadoop07:2888:3888 保存退出然后创建一个tmp文件夹 mkdir /lichangwu/zookeeper-3.4.6/tmp 再创建一个空文件 touch /lichangwu/zookeeper-3.4.6/tmp/myid 最后向该文件写入ID echo 1 > /lichangwu/zookeeper-3.4.6/tmp/myid 1.3将配置好的zookeeper拷贝到其他节点(首先分别在hadoop06、hadoop07根目录下创建一个lichangwu目录：mkdir /lichangwu) scp -r /lichangwu/zookeeper-3.4.6/ hadoop06:/lichangwu/ scp -r /lichangwu/zookeeper-3.4.6/ hadoop07:/lichangwu/ 注意：修改hadoop06、hadoop07对应/lichangwu/zookeeper-3.4.6/tmp/myid内容 itcast06： echo 2 > /lichangwu/zookeeper-3.4.6/tmp/myid itcast07： echo 3 > /lichangwu/zookeeper-3.4.6/tmp/myid 8.安装配置hadoop集群（在hadoop01上操作）: 2.1解压 tar -zxvf hadoop-2.4.1.tar.gz -C /lichangwu/ 2.2配置HDFS（hadoop2.0所有的配置文件都在$HADOOP_HOME/etc/hadoop目录下） #将hadoop添加到环境变量中 vim /etc/profile export JAVA_HOME=/lichangwu/jdk1.7.0_79 export HADOOP_HOME=/lichangwu/hadoop-2.4.1 export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin #hadoop2.0的配置文件全部在$HADOOP_HOME/etc/hadoop下 cd /lichangwu/hadoop-2.4.1/etc/hadoop 2.2.1修改hadoo-env.sh export JAVA_HOME=/lichangwu/jdk1.7.0_79 2.2.2修改core-site.xml <configuration>  <property> <name>fs.defaultFS</name> <value>hdfs://ns1</value> </property>  <property> <name>hadoop.tmp.dir</name> <value>/lichangwu/hadoop-2.4.1/tmp</value> </property>  <property> <name>ha.zookeeper.quorum</name> <value>hadoop05:2181,hadoop06:2181,hadoop07:2181</value> </property> </configuration> 2.2.3修改hdfs-site.xml <configuration>  <property> <name>dfs.nameservices</name> <value>ns1</value> </property>  <property> <name>dfs.ha.namenodes.ns1</name> <value>nn1,nn2</value> </property>  <property> <name>dfs.namenode.rpc-address.ns1.nn1</name> <value>hadoop01:9000</value> </property>  <property> <name>dfs.namenode.http-address.ns1.nn1</name> <value>hadoop01:50070</value> </property>  <property> <name>dfs.namenode.rpc-address.ns1.nn2</name> <value>hadoop02:9000</value> </property>  <property> <name>dfs.namenode.http-address.ns1.nn2</name> <value>hadoop02:50070</value> </property>  <property> <name>dfs.namenode.shared.edits.dir</name> <value>qjournal://hadoop05:8485;hadoop06:8485;hadoop07:8485/ns1</value> </property>  <property> <name>dfs.journalnode.edits.dir</name> <value>/lichangwu/hadoop-2.4.1/journal</value> </property>  <property> <name>dfs.ha.automatic-failover.enabled</name> <value>true</value> </property>  <property> <name>dfs.client.failover.proxy.provider.ns1</name> <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value> </property>  <property> <name>dfs.ha.fencing.methods</name> <value> sshfence shell(/bin/true) </value> </property>  <property> <name>dfs.ha.fencing.ssh.private-key-files</name> <value>/home/hadoop/.ssh/id_rsa</value> </property>  <property> <name>dfs.ha.fencing.ssh.connect-timeout</name> <value>30000</value> </property> </configuration> 2.2.4修改mapred-site.xml <configuration>  <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration> 2.2.5修改yarn-site.xml <configuration>  <property> <name>yarn.resourcemanager.ha.enabled</name> <value>true</value> </property>  <property> <name>yarn.resourcemanager.cluster-id</name> <value>yrc</value> </property>  <property> <name>yarn.resourcemanager.ha.rm-ids</name> <value>rm1,rm2</value> </property>  <property> <name>yarn.resourcemanager.hostname.rm1</name> <value>hadoop03</value> </property> <property> <name>yarn.resourcemanager.hostname.rm2</name> <value>hadoop04</value> </property>  <property> <name>yarn.resourcemanager.zk-address</name> <value>hadoop05:2181,hadoop06:2181,hadoop07:2181</value> </property> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> </configuration> 2.2.6修改slaves(slaves是指定子节点的位置，因为要在itcast01上启动HDFS、在itcast03启动yarn，所以itcast01上的slaves文件指定的是datanode的位置，itcast03上的slaves文件指定的是nodemanager的位置) hadoop05 hadoop06 hadoop07 2.2.7配置免密码登陆 #首先要配置itcast01到hadoop02、hadoop03、hadoop04、hadoop05、hadoop06、hadoop07的免密码登陆 #在hadoop01上生产一对钥匙 ssh-keygen -t rsa #将公钥拷贝到其他节点，包括自己 ssh-coyp-id hadoop01 ssh-coyp-id hadoop02 ssh-coyp-id hadoop03 ssh-coyp-id hadoop04 ssh-coyp-id hadoop05 ssh-coyp-id hadoop06 ssh-coyp-id hadoop07 #配置hadoop03到hadoop04、hadoop05、hadoop06、hadoop07的免密码登陆 #在hadoop03上生产一对钥匙 ssh-keygen -t rsa #将公钥拷贝到其他节点 ssh-coyp-id hadoop04 ssh-coyp-id hadoop05 ssh-coyp-id hadoop06 ssh-coyp-id hadoop07 #注意：两个namenode之间要配置ssh免密码登陆，别忘了配置hadoop02到hadoop01的免登陆在hadoop02上生产一对钥匙 ssh-keygen -t rsa ssh-coyp-id -i hadoop01 2.4将配置好的hadoop拷贝到其他节点 scp -r hadoop-2.4.1/ hadoop02:/lichangwu/hadoop-2.4.1/ scp -r hadoop-2.4.1/ hadoop03:/lichangwu/hadoop-2.4.1/ scp -r hadoop-2.4.1/ hadoop04:/lichangwu/hadoop-2.4.1/ scp -r hadoop-2.4.1/ hadoop05:/lichangwu/hadoop-2.4.1/ scp -r hadoop-2.4.1/ hadoop06:/lichangwu/hadoop-2.4.1/ scp -r hadoop-2.4.1/ hadoop07:/lichangwu/hadoop-2.4.1/ ###注意：严格按照下面的步骤 2.5启动zookeeper集群（分别在hadoop05、hadoop06、hadoop07上启动zk） cd /lichangwu/zookeeper-3.4.6/bin/ ./zkServer.sh start #查看状态：一个leader，两个follower ./zkServer.sh status 2.6启动journalnode（分别在在hadoop05、hadoop06、hadoop07上执行） cd /lichangwu/hadoop-2.4.1 sbin/hadoop-daemon.sh start journalnode #运行jps命令检验，hadoop05、hadoop06、hadoop07上多了JournalNode进程 2.7格式化HDFS #在hadoop01上执行命令: hdfs namenode -format #格式化后会在根据core-site.xml中的hadoop.tmp.dir配置生成个文件，这里我配置的是/lichangwu/hadoop-2.4.1/tmp，然后将/lichangwu/hadoop-2.4.1/tmp拷贝到hadoop02的/lichangwu/hadoop-2.4.1/下。 scp -r tmp/ hadoop02:/lichangwu/hadoop-2.4.1/ 2.8格式化ZK(在hadoop01上执行即可) hdfs zkfc -formatZK 2.9启动HDFS(在hadoop01上执行) sbin/start-dfs.sh 2.10启动YARN(#####注意#####：是在hadoop03上执行start-yarn.sh，如果hadoop04上没有启动成功，则在hadoop04上再启动一次start-yarn.sh; 把namenode和resourcemanager分开是因为性能问题，因为他们都要占用大量资源，所以把他们分开了，他们分开了就要分别在不同的机器上启动) sbin/start-yarn.sh 到此，hadoop-2.4.1配置完毕，可以统计浏览器访问: http://192.168.175.129:50070 NameNode 'hadoop01:9000' (active) http://192.168.175.127:50070 NameNode 'hadoop02:9000' (standby)

相见恨晚的超实用网站: 搞学习知乎：www.zhihu.com 简答题：http://www.jiandati.com/ 网易公开课：https://open.163.com/ted/ 网易云课堂：https://study.163.com/ 中国大学MOOC：www.icourse163.org 网易云课堂：study.163.com 哔哩哔哩弹幕网：www.bilibili.com 我要自学网：www.51zxw

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