CM6安装CDH6的时候到了这一步出现了这个问题

Traceback (most recent call last):

``````File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/downloader.py", line 502, in callable
callback(url, curr_op)

File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/parcel_cache.py", line 200, in cb
raise e
``````

Exception: Src file /opt/cloudera/parcels/.flood/CDH-6.1.0-1.cdh6.1.0.p0.770702-el7.parcel/CDH-6.1.0-1.cdh6.1.0.p0.770702-el7.parcel does not exist

centos7 配置cloudera 在web 群集安装 的install parcels 这一步分配完成后 报错

Problem Description Rancher Joel has a tract of land in the shape of a convex quadrilateral that the wants to divide among his sons Al, Bob, Chas and Dave, who wish to continue ranching on their portions, and his daughter Emily, who wishes to grow vegetables on her portion. The center of the tract is most suitable for vegetable farming so Joel decides to divide the land by drawing lines from each corner (A, B, C, D in counter clockwise order) to the center of an opposing side (respectively A', B', C' and D') Each son would receive one of the triangular sections and Emily would receive the central quadrilateral section. As shown in the figure, Al's tract is to be bounded by the line from A to B, the line from A to the midpoint of BC and the line from B to the midpoint of CD' Bob&s ract is to be bounded by the line from B to C, the line from B to the midpoint of CD and the line from C to the midpoint of DA, and so on. Your job is to write a program that will help Rancher Joel determine the area of each child's tract and the length of the fence he will have to put around Emily's parcel to keep her brothers' cows out of her crops. For his problem, A will always be at (0, 0) and B will always be at (x, 0). Coordinates will be in rods (a rod is 16.5 feet).The returned areas should be in acres to 3 decimal places (an acre is 160 square rods) and the length of the fence should be in feet, rounded up to the next foot. Input The first line of input contains a single integer P( 1 <= P <= 1000),which is the number of data sets that follow. Each data set is a single line that contains of a decimal integer followed by five (5) space separated floating-point values. The first (integer) value is the data set number, N. The floating-point values are B.x, C.x, C.y, D.x and D.y in that order (where V.x indicates the x coordinate of V and V.y indicates the y coordinate of V). Recall that the y coordinate of B is always zero (0). The supplied coordinates will always specify a valid convex quadrilateral. Output For each data set there is a single line of output. It contains the data set number, N , followed by a single space followed by five(5) space separated floating-point values to three(3) decimal place accuracy, followed by a single space and a decimal integer! The floating-point values are the areas in acres of the properties of Al, Bob, Chas, Dave, and Emily respectively. The final integer is the length of fence in feet required to fence in Emily's property (rounded up to the next foot). Sample Input 3 1 200 250 150 -50 200 2 200 200 100 0 100 3 201.5 157.3 115.71 -44.2 115.71 Sample Output 1 35.000 54.136 75.469 54.167 54.666 6382 2 25.000 25.000 25.000 25.000 25.000 4589 3 29.144 29.144 29.144 29.144 29.144 4937
Detour Buster 算法的思路是什么
Problem Description The Green Parcel Services company employs cyclists to deliver parcels across a large metropolitan city, and employees are paid according to the distances they must travel to deliver parcels. Each company bicycle has been equipped with a global positioning system that records its position once every couple of seconds. The sequence of positions for one delivery is called a track and the length of a track, which is the sum of euclidean distances between consecutive pairs of recorded points, is used to calculate the employee's payment. A recent audit of the recorded tracks revealed that some tracks self-intersect, which indicates that some employees are making unnecessary detours. Your task is to write a program to process a given track and calculate the length of the shortest possible track from the first to the last point of the original track. The shortest possible track must be part of the original track and may include travelling in the same or opposite direction along the original track. Input Input starts with an integer, on a line by itself, that represents the number of tracks tobe shortened. The description of each track begins with a positive integer N, on a line by itself, representing the number of recorded points that define the track. Each of the following N lines contains two integers, separated by a single space, that define the xand y-coordinates of a point on the track in metres. The points are listed in order of their appearance on the track. Two successive points, which form a segment, will be no more than thirty metres apart and a segment will not intersect more than twenty other segments. All x- and ycoordinates have values between -10,000,000 and 10,000,000, inclusive. N has values between 1 and 100,000, inclusive. Output For each input track, the output consists of a single integer, on a line by itself, which is the length of the shortest track in metres. The answer must be rounded to the nearest integer value. Reminder: Rounding a positive number R.xyz to the nearest integer： If the first decimal place (that is x) is less than 5, then the rounded value is R. Otherwise, the rounded value is R+1. Sample Input 25 0 0 12 0 20 0 10 10 10 -10 6 0 0 15 0 10 -5 4 1 10 1 10 -10 Sample Output 20 17
androidstudio编写cmake程序ffmpeg时报的错
Problem Description Rancher Joel has a tract of land in the shape of a convex quadrilateral that the wants to divide among his sons Al, Bob, Chas and Dave, who wish to continue ranching on their portions, and his daughter Emily, who wishes to grow vegetables on her portion. The center of the tract is most suitable for vegetable farming so Joel decides to divide the land by drawing lines from each corner (A, B, C, D in counter clockwise order) to the center of an opposing side (respectively A', B', C' and D') Each son would receive one of the triangular sections and Emily would receive the central quadrilateral section. As shown in the figure, Al's tract is to be bounded by the line from A to B, the line from A to the midpoint of BC and the line from B to the midpoint of CD' Bob&s ract is to be bounded by the line from B to C, the line from B to the midpoint of CD and the line from C to the midpoint of DA, and so on. Your job is to write a program that will help Rancher Joel determine the area of each child's tract and the length of the fence he will have to put around Emily's parcel to keep her brothers' cows out of her crops. For his problem, A will always be at (0, 0) and B will always be at (x, 0). Coordinates will be in rods (a rod is 16.5 feet).The returned areas should be in acres to 3 decimal places (an acre is 160 square rods) and the length of the fence should be in feet, rounded up to the next foot. Input The first line of input contains a single integer P( 1 <= P <= 1000),which is the number of data sets that follow. Each data set is a single line that contains of a decimal integer followed by five (5) space separated floating-point values. The first (integer) value is the data set number, N. The floating-point values are B.x, C.x, C.y, D.x and D.y in that order (where V.x indicates the x coordinate of V and V.y indicates the y coordinate of V). Recall that the y coordinate of B is always zero (0). The supplied coordinates will always specify a valid convex quadrilateral. Output For each data set there is a single line of output. It contains the data set number, N , followed by a single space followed by five(5) space separated floating-point values to three(3) decimal place accuracy, followed by a single space and a decimal integer! The floating-point values are the areas in acres of the properties of Al, Bob, Chas, Dave, and Emily respectively. The final integer is the length of fence in feet required to fence in Emily's property (rounded up to the next foot). Sample Input 3 1 200 250 150 -50 200 2 200 200 100 0 100 3 201.5 157.3 115.71 -44.2 115.71 Sample Output 1 35.000 54.136 75.469 54.167 54.666 6382 2 25.000 25.000 25.000 25.000 25.000 4589 3 29.144 29.144 29.144 29.144 29.144 4937
appium1.15.1连接安卓系统7.0以上的真机，打开非系统应用报安全错误，求解？

public class DBHelper extends SQLiteOpenHelper { private static final String DATABASE_PATH_NAME=SDBHelper.DB_DIR+File.separator+"luyou1.db"; private static final int DATABASE_VERSION=1; public DBHelper(Context context) { super(context, DATABASE_PATH_NAME,null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { } }
cloudera manager 离线安装安装agent时，向主节点下载资源超时

andriod中运行登录程序时app退出，求解

Hexagonal Parcels怎么编写程序
java.lang.SecurityException: Permission denial

cts verify 这个是为啥
adb shell dpm set-device-owner 'com.android.cts.verifier/com.android.cts.verifier.managedprovisioning.DeviceAdminTestReceiver' java.lang.IllegalStateException: Not allowed to set the device owner because there are already some accounts on the device at android.os.Parcel.readException(Parcel.java:1607) at android.os.Parcel.readException(Parcel.java:1552) at android.app.admin.IDevicePolicyManager\$Stub\$Proxy.setDeviceOwner(IDevicePolicyManager.java:3515) at com.android.commands.dpm.Dpm.runSetDeviceOwner(Dpm.java:114) at com.android.commands.dpm.Dpm.onRun(Dpm.java:82) at com.android.internal.os.BaseCommand.run(BaseCommand.java:47) at com.android.commands.dpm.Dpm.main(Dpm.java:38) at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method) at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:306)

android序列化有Parcelable和Serializable两种方式。Serializable方式通过持续化到磁盘实现，Parcelable通过内存实现，但是Parcel可以通过marshall 和 unmarshall方法让Parcelable持续到本地磁盘。网上其他博客说"parcelable不能应用于将数据存储在磁盘上的情况，因为在外界有变化的情况下，Parcelable不能很好的保证数据的持续性。" 1. **句话是什么意思？** 2. **保证数据的持续性是指什么？** 3. **外界有变化又是指的什么？**
《奇巧淫技》系列-python！！每天早上八点自动发送天气预报邮件到QQ邮箱

Linux(服务器编程):15---两种高效的事件处理模式（reactor模式、proactor模式）

C语言魔塔游戏

​ 进程通信是指进程之间的信息交换。这里需要和进程同步做一下区分，进程同步控制多个进程按一定顺序执行，进程通信是一种手段，而进程同步是目标。从某方面来讲，进程通信可以解决进程同步问题。 ​ 首先回顾下我们前面博文中讲到的信号量机制，为了实现进程的互斥与同步，需要在进程间交换一定的信息，因此信号量机制也可以被归为进程通信的一种方式，但是也被称为低级进程通信，主要原因为： 效率低：一次只可操作少量的...

Python爬虫爬取淘宝，京东商品信息

Java工作4年来应聘要16K最后没要,细节如下。。。

2020年，冯唐49岁：我给20、30岁IT职场年轻人的建议

##1、骇客帝国(1999) 概念：在线/离线，递归，循环，矩阵等 剧情简介： 不久的将来，网络黑客尼奥对这个看似正常的现实世界产生了怀疑。 他结识了黑客崔妮蒂，并见到了黑客组织的首领墨菲斯。 墨菲斯告诉他，现实世界其实是由一个名叫“母体”的计算机人工智能系统控制，人们就像他们饲养的动物，没有自由和思想，而尼奥就是能够拯救人类的救世主。 可是，救赎之路从来都不会一帆风顺，到底哪里才是真实的世界？

Python绘图，圣诞树，花，爱心 | Turtle篇

CPU对每个程序员来说，是个既熟悉又陌生的东西？ 如果你只知道CPU是中央处理器的话，那可能对你并没有什么用，那么作为程序员的我们，必须要搞懂的就是CPU这家伙是如何运行的，尤其要搞懂它里面的寄存器是怎么一回事，因为这将让你从底层明白程序的运行机制。 随我一起，来好好认识下CPU这货吧 把CPU掰开来看 对于CPU来说，我们首先就要搞明白它是怎么回事，也就是它的内部构造，当然，CPU那么牛的一个东

2020年1月17日，国家统计局发布了2019年国民经济报告，报告中指出我国人口突破14亿。 猪哥的朋友圈被14亿人口刷屏，但是很多人并没有看到我国复杂的人口问题：老龄化、男女比例失衡、生育率下降、人口红利下降等。 今天我们就来分析一下我们国家的人口数据吧！ 一、背景 1.人口突破14亿 2020年1月17日，国家统计局发布了 2019年国民经济报告 ，报告中指出：年末中国大陆总人口（包括31个

2020年的1月，我辞掉了我的第一份工作

Java坑人面试题系列: 包装类（中级难度）
Java Magazine上面有一个专门坑人的面试题系列: https://blogs.oracle.com/javamagazine/quiz-2。 这些问题的设计宗旨，主要是测试面试者对Java语言的了解程度，而不是为了用弯弯绕绕的手段把面试者搞蒙。 如果你看过往期的问题，就会发现每一个都不简单。 这些试题模拟了认证考试中的一些难题。 而 “中级(intermediate)” 和 “高级(ad

By 超神经场景描述：昨天 2 月 3 日，是大部分城市号召远程工作的第一天，全国有接近 2 亿人在家开始远程办公，钉钉上也有超过 1000 万家企业活跃起来。关键词：十一出行 人脸...
Java基础知识点梳理
Java基础知识点梳理 摘要： 虽然已经在实际工作中经常与java打交道，但是一直没系统地对java这门语言进行梳理和总结，掌握的知识也比较零散。恰好利用这段时间重新认识下java，并对一些常见的语法和知识点做个总结与回顾，一方面为了加深印象，方便后面查阅，一方面为了学好java打下基础。 Java简介 java语言于1995年正式推出，最开始被命名为Oak语言，由James Gosling（詹姆
2020年全新Java学习路线图，含配套视频，学完即为中级Java程序员！！

B 站上有哪些很好的学习资源?