获取hadoop版本关联到eclipse中的安装包

2017-2-13来源:经验技巧人气:279

转载自:http://blog.csdn.net/jiutianhe/article/details/39233609

我们如果想搞开发,研究源码对我们的帮助很大。不明白原理就如同黑盒子,遇到问题,我们也摸不着思路。所以这里交给大家 一.如何获取源码 二.如何关联源码 一.如何获取源码 1.下载hadoop的maven程序包 (1)官网下载 这里我们先从官网上下载maven包hadoop-2.4.0-src.tar.gz。 官网下载地址 对于不知道怎么去官网下载,可以查看:新手指导:hadoop官网介绍及如何下载hadoop(2.4)各个版本与查看hadoop API介绍 (2)网盘下载 也可以从网盘下载: http://pan.baidu.com/s/1kToPuGB 2.通过maven获取源码 获取源码的方式有两种,一种是通过命令行的方式,一种是通过eclipse。这里主要讲通过命令的方式 通过命令的方式获取源码: 1.解压包   解压包的时候遇到了下面问题。不过不用管,我们继续往下走
1        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-PRoject\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-applicationhistoryservice\target\classes\org\apache\hadoop\yarn\server\applicationhistoryservice\ApplicationHistoryClientService$ApplicationHSClientProtocolHandler.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 2        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-applicationhistoryservice\target\classes\org\apache\hadoop\yarn\server\applicationhistoryservice\timeline\LeveldbTimelineStore$LockMap$CountingReentrantLock.class:系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 3        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-applicationhistoryservice\target\test-classes\org\apache\hadoop\yarn\server\applicationhistoryservice\webapp\TestAHSWebApp$MockApplicationHistoryManagerImpl.class:系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 4        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\monitor\capacity\TestProportionalCapacityPreemptionPolicy$IsPreemptionRequestFor.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 5        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\recovery\TestFSRMStateStore$TestFSRMStateStoreTester$TestFileSystemRMStore.class:系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 6        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\recovery\TestZKRMStateStore$TestZKRMStateStoreTester$TestZKRMStateStoreInternal.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 7        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\recovery\TestZKRMStateStoreZKClientConnections$TestZKClient$TestForwardingWatcher.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 8        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\recovery\TestZKRMStateStoreZKClientConnections$TestZKClient$TestZKRMStateStore.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 9        : 无法创建文件:D:\hadoop2\hadoop-2.4.0-src\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-resourcemanager\target\test-classes\org\apache\hadoop\yarn\server\resourcemanager\rmapp\attempt\TestRMAppAttemptTransitions$TestApplicationAttemptEventDispatcher.class: 路径和文件名总长度不能超过260个字符 系统找不到指定的路径。        D:\hadoop2\hadoop-2.4.0-src.zip 2.通过maven获取源码 这里需要说明的是,在使用maven的时候,需要先安装jdk,protoc ,如果没有安装可以参考Win7如何安装maven、安装protoc (1)进入hadoop-2.4.0-src\hadoop-maven-plugins,运行mvn install D:\hadoop2\hadoop-2.4.0-src\hadoop-maven-plugins>mvn install 复制代码 显示如下信息 [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for org.apache.hadoop:hadoop-maven-plugins:maven-plugin:2.4.0 [WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found d uplicate declaration of plugin org.apache.maven.plugins:maven-enforcer-plugin @ org.apache.hadoop:hadoop-project:2.4.0, D:\hadoop2\hadoop-2.4.0-src\hadoop-proje ct\pom.xml, line 1015, column 15 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten t he stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support buildin g such malformed projects. [WARNING] [INFO] [INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethrea ded.SingleThreadedBuilder with a thread count of 1 [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building Apache Hadoop Maven Plugins 2.4.0 [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-antrun-plugin:1.7:run (create-testdirs) @ hadoop-maven-plugins --- [INFO] Executing tasks main: [INFO] Executed tasks [INFO] [INFO] --- maven-plugin-plugin:3.0:descriptor (default-descriptor) @ hadoop-mave n-plugins --- [INFO] Using 'UTF-8' encoding to read mojo metadata. [INFO] Applying mojo extractor for language: java-annotations [INFO] Mojo extractor for language: java-annotations found 2 mojo descriptors. [INFO] Applying mojo extractor for language: java [INFO] Mojo extractor for language: java found 0 mojo descriptors. [INFO] Applying mojo extractor for language: bsh [INFO] Mojo extractor for language: bsh found 0 mojo descriptors. [INFO] [INFO] --- maven-resources-plugin:2.2:resources (default-resources) @ hadoop-mav en-plugins --- [INFO] Using default encoding to copy filtered resources. [INFO] [INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ hadoop-maven- plugins --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] --- maven-plugin-plugin:3.0:descriptor (mojo-descriptor) @ hadoop-maven-p lugins --- [INFO] Using 'UTF-8' encoding to read mojo metadata. [INFO] Applying mojo extractor for language: java-annotations [INFO] Mojo extractor for language: java-annotations found 2 mojo descriptors. [INFO] Applying mojo extractor for language: java [INFO] Mojo extractor for language: java found 0 mojo descriptors. [INFO] Applying mojo extractor for language: bsh [INFO] Mojo extractor for language: bsh found 0 mojo descriptors. [INFO] [INFO] --- maven-resources-plugin:2.2:testResources (default-testResources) @ ha doop-maven-plugins --- [INFO] Using default encoding to copy filtered resources. [INFO] [INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ hadoo p-maven-plugins --- [INFO] No sources to compile [INFO] [INFO] --- maven-surefire-plugin:2.16:test (default-test) @ hadoop-maven-plugins --- [INFO] No tests to run. [INFO] [INFO] --- maven-jar-plugin:2.3.1:jar (default-jar) @ hadoop-maven-plugins --- [INFO] Building jar: D:\hadoop2\hadoop-2.4.0-src\hadoop-maven-plugins\target\had oop-maven-plugins-2.4.0.jar [INFO] [INFO] --- maven-plugin-plugin:3.0:addPluginArtifactMetadata (default-addPluginA rtifactMetadata) @ hadoop-maven-plugins --- [INFO] [INFO] --- maven-site-plugin:3.3:attach-descriptor (attach-descriptor) @ hadoop- maven-plugins --- [INFO] [INFO] --- maven-install-plugin:2.3.1:install (default-install) @ hadoop-maven-p lugins --- [INFO] Installing D:\hadoop2\hadoop-2.4.0-src\hadoop-maven-plugins\target\hadoop -maven-plugins-2.4.0.jar to C:\Users\hyj\.m2\repository\org\apache\hadoop\hadoop -maven-plugins\2.4.0\hadoop-maven-plugins-2.4.0.jar [INFO] Installing D:\hadoop2\hadoop-2.4.0-src\hadoop-maven-plugins\pom.xml to C: \Users\hyj\.m2\repository\org\apache\hadoop\hadoop-maven-plugins\2.4.0\hadoop-ma ven-plugins-2.4.0.pom [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 4.891 s [INFO] Finished at: 2014-06-23T14:47:33+08:00 [INFO] Final Memory: 21M/347M [INFO] ------------------------------------------------------------------------ 复制代码 部分截图如下:     (2)运行 mvn eclipse:eclipse -DskipTests 复制代码 这时候注意,我们进入的是hadoop_home,我这里是D:\hadoop2\hadoop-2.4.0-src 部分信息如下 [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] Apache Hadoop Main ................................ SUCCESS [  0.684 s] [INFO] Apache Hadoop Project POM ......................... SUCCESS [  0.720 s] [INFO] Apache Hadoop Annotations ......................... SUCCESS [  0.276 s] [INFO] Apache Hadoop Project Dist POM .................... SUCCESS [  0.179 s] [INFO] Apache Hadoop Assemblies .......................... SUCCESS [  0.121 s] [INFO] Apache Hadoop Maven Plugins ....................... SUCCESS [  1.680 s] [INFO] Apache Hadoop MiniKDC ............................. SUCCESS [  1.802 s] [INFO] Apache Hadoop Auth ................................ SUCCESS [  1.024 s] [INFO] Apache Hadoop Auth Examples ....................... SUCCESS [  0.160 s] [INFO] Apache Hadoop Common .............................. SUCCESS [  1.061 s] [INFO] Apache Hadoop NFS ................................. SUCCESS [  0.489 s] [INFO] Apache Hadoop Common Project ...................... SUCCESS [  0.056 s] [INFO] Apache Hadoop HDFS ................................ SUCCESS [  2.770 s] [INFO] Apache Hadoop HttpFS .............................. SUCCESS [  0.965 s] [INFO] Apache Hadoop HDFS BookKeeper Journal ............. SUCCESS [  0.629 s] [INFO] Apache Hadoop HDFS-NFS ............................ SUCCESS [  0.284 s] [INFO] Apache Hadoop HDFS Project ........................ SUCCESS [  0.061 s] [INFO] hadoop-yarn ....................................... SUCCESS [  0.052 s] [INFO] hadoop-yarn-api ................................... SUCCESS [  0.842 s] [INFO] hadoop-yarn-common ................................ SUCCESS [  0.322 s] [INFO] hadoop-yarn-server ................................ SUCCESS [  0.065 s] [INFO] hadoop-yarn-server-common ......................... SUCCESS [  0.972 s] [INFO] hadoop-yarn-server-nodemanager .................... SUCCESS [  0.580 s] [INFO] hadoop-yarn-server-web-proxy ...................... SUCCESS [  0.379 s] [INFO] hadoop-yarn-server-applicationhistoryservice ...... SUCCESS [  0.281 s] [INFO] hadoop-yarn-server-resourcemanager ................ SUCCESS [  0.378 s] [INFO] hadoop-yarn-server-tests .......................... SUCCESS [  0.534 s] [INFO] hadoop-yarn-client ................................ SUCCESS [  0.307 s] [INFO] hadoop-yarn-applications .......................... SUCCESS [  0.050 s] [INFO] hadoop-yarn-applications-distributedshell ......... SUCCESS [  0.202 s] [INFO] hadoop-yarn-applications-unmanaged-am-launcher .... SUCCESS [  0.194 s] [INFO] hadoop-yarn-site .................................. SUCCESS [  0.057 s] [INFO] hadoop-yarn-project ............................... SUCCESS [  0.066 s] [INFO] hadoop-mapreduce-client ........................... SUCCESS [  0.091 s] [INFO] hadoop-mapreduce-client-core ...................... SUCCESS [  1.321 s] [INFO] hadoop-mapreduce-client-common .................... SUCCESS [  0.786 s] [INFO] hadoop-mapreduce-client-shuffle ................... SUCCESS [  0.456 s] [INFO] hadoop-mapreduce-client-app ....................... SUCCESS [  0.508 s] [INFO] hadoop-mapreduce-client-hs ........................ SUCCESS [  0.834 s] [INFO] hadoop-mapreduce-client-jobclient ................. SUCCESS [  0.541 s] [INFO] hadoop-mapreduce-client-hs-plugins ................ SUCCESS [  0.284 s] [INFO] Apache Hadoop MapReduce Examples .................. SUCCESS [  0.851 s] [INFO] hadoop-mapreduce .................................. SUCCESS [  0.099 s] [INFO] Apache Hadoop MapReduce Streaming ................. SUCCESS [  0.742 s] [INFO] Apache Hadoop Distributed Copy .................... SUCCESS [  0.335 s] [INFO] Apache Hadoop Archives ............................ SUCCESS [  0.397 s] [INFO] Apache Hadoop Rumen ............................... SUCCESS [  0.371 s] [INFO] Apache Hadoop Gridmix ............................. SUCCESS [  0.230 s] [INFO] Apache Hadoop Data Join ........................... SUCCESS [  0.184 s] [INFO] Apache Hadoop Extras .............................. SUCCESS [  0.217 s] [INFO] Apache Hadoop Pipes ............................... SUCCESS [  0.048 s] [INFO] Apache Hadoop OpenStack support ................... SUCCESS [  0.244 s] [INFO] Apache Hadoop Client .............................. SUCCESS [  0.590 s] [INFO] Apache Hadoop Mini-Cluster ........................ SUCCESS [  0.230 s] [INFO] Apache Hadoop Scheduler Load Simulator ............ SUCCESS [  0.650 s] [INFO] Apache Hadoop Tools Dist .......................... SUCCESS [  0.334 s] [INFO] Apache Hadoop Tools ............................... SUCCESS [  0.042 s] [INFO] Apache Hadoop Distribution ........................ SUCCESS [  0.144 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 31.234 s [INFO] Finished at: 2014-06-23T14:55:08+08:00 [INFO] Final Memory: 84M/759M [INFO] ------------------------------------------------------------------------ 复制代码 这时候,我们已经把源码给下载下来了。这时候,我们会看到文件会明显增大。   3.关联eclipse源码 加入我们以下程序  hadoop2.2mapreduce例子.rar (1.14 MB, 下载次数: 68, 售价: 1 云币)  如下图示,对他们进行了打包   这两个文件, MaxTemperature.zip为mapreduce例子,mockito-core-1.8.5.jar为mapreduce例子所引用的包 (这里需要说明的是,mapreduce为2.2,但是不影响关联源码,只是交给大家该如何关联源码) 我们解压之后,导入eclipse (对于导入项目不熟悉,参考零基础教你如何导入eclipse项目)   我们导入之后,看到很多的红线,这些其实都是没有引用包,下面我们开始解决这些语法问题。 一、解决导入jar包 (1)引入mockito-core-1.8.5.jar (2)hadoop2.4编译包中的jar文件,这些文件的位置如下: hadoop_home中share\hadoop文件夹下,具体我这的位置D:\hadoop2\hadoop-2.4.0\share\hadoop 找到里面的jar包,举例如下:lib文件中的jar包,以及下面的jar包都添加到buildpath中。 如果对于引用包,不知道该如何添加这些jar包,参考hadoop开发方式总结及操作指导。 (注意的是,我们这里是引入的是编译包,编译的下载hadoop--642.4.0.tar.gz 链接: http://pan.baidu.com/s/1c0vPjG0 密码:xj6l) 更多包下载可以参考hadoop家族、strom、spark、linux、flume等jar包、安装包汇总下载     二、关联源码 1.我们导入jar包之后,就没有错误了,如下图所示   2.找不到源码 当我们想看一个类或则函数怎么实现的时候,通过Open Call Hierarchy,却找不到源文件。     3.Attach Source   上面三处,我们按照顺序添加即可,我们选定压缩包之后,单击确定,ok了,我们的工作已经完毕。 注意:对于hadoop-2.2.0-src.zip则是我们上面通过maven下载的源码,然后压缩的文件,记得一定是压缩文件zip的形式 4.验证关联后查看源码 我们再次执行上面操作,通过Open Call Hierarchy 看到下面内容   然后我们双击上图主类,即红字部分,我们看到下面内容:   问题: 细心的同学,这里面我们产生一个问题,因为我们看到的是.class文件,而不是.java文件。那么他会不会和我们所看到的.java文件不一样那。 其实是一样的,感兴趣的同学,可以验证一下。