jdbc访问impala的时候加载驱动报错,怎样解决?

Question

java.sql.SQLException: [Simba]ImpalaJDBCDriver Error setting/closing session: {0}.
at com.cloudera.hivecommon.api.HS2Client.openSession(Unknown Source)
at com.cloudera.hivecommon.api.HS2Client.(Unknown Source)
at com.cloudera.hivecommon.api.HiveServer2ClientFactory.createClient(Unknown Source)
at com.cloudera.hivecommon.core.HiveJDBCCommonConnection.connect(Unknown Source)
at com.cloudera.jdbc.common.BaseConnectionFactory.doConnect(Unknown Source)
at com.cloudera.jdbc.common.AbstractDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
Caused by: com.cloudera.support.exceptions.GeneralException: [Simba]ImpalaJDBCDriver Error setting/closing session: {0}.
... 8 more
Caused by: org.apache.thrift.TApplicationException: Invalid method name: 'OpenSession'
at org.apache.thrift.TApplicationException.read(TApplicationException.java:108)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:71)
at org.apache.hive.service.cli.thrift.TCLIService$Client.recv_OpenSession(TCLIService.java:159)
at com.cloudera.hivecommon.api.HS2ClientWrapper.recv_OpenSession(Unknown Source)
at org.apache.hive.service.cli.thrift.TCLIService$Client.OpenSession(TCLIService.java:146)
at com.cloudera.hivecommon.api.HS2ClientWrapper.OpenSession(Unknown Source)
at com.cloudera.hivecommon.api.HS2Client.openSession(Unknown Source)
at com.cloudera.hivecommon.api.HS2Client.(Unknown Source)
at com.cloudera.hivecommon.api.HiveServer2ClientFactory.createClient(Unknown Source)
at com.cloudera.hivecommon.core.HiveJDBCCommonConnection.connect(Unknown Source)
at com.cloudera.jdbc.common.BaseConnectionFactory.doConnect(Unknown Source)
at com.cloudera.jdbc.common.AbstractDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.impala.test.Test.main(Test.java:23)

Answer 1

你的对像没有创建成功，返回的对象是空的，导致调用的时候无法连接