hive1.2.1源码导入eclipse

软件版本:

hive1.2.1 ,eclipse4.5,maven3.2 ,JDK1.7

软件准备:

hive:


环境准备:

(1). 安装好的hadoop集群(伪分布式亦可);

(2) linux 下maven环境;(这里需要说下,maven编译hive,在windows下是不通的,因为里面需要bash的支持,所以直接使用linux编译hive就好)


0. 编译前,建议把maven的local_reposity 配置下,同时配置源如下(开源中国的maven源,相对国外的源较快):

<mirror>
        <id>nexus-osc</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus osc</name>
        <url>http://maven.oschina.net/content/groups/public/</url>
    </mirror>
    <mirror>
        <id>nexus-osc-thirdparty</id>
        <mirrorOf>thirdparty</mirrorOf>
        <name>Nexus osc thirdparty</name>
        <url>http://maven.oschina.net/content/repositories/thirdparty/</url>
    </mirror>


1. 编译Hive,下载hive1.2.1的源码,并解压到linux某目录,按照下面的命令进行编译(进入hive源码解压后路径):

(1)mvn clean install -DskipTests -Phadoop-2

[INFO] Reactor Summary:
[INFO] 
[INFO] Hive ............................................... SUCCESS [  4.457 s]
[INFO] Hive Shims Common .................................. SUCCESS [  5.047 s]
[INFO] Hive Shims 0.20S ................................... SUCCESS [  2.017 s]
[INFO] Hive Shims 0.23 .................................... SUCCESS [  7.157 s]
[INFO] Hive Shims Scheduler ............................... SUCCESS [  1.796 s]
[INFO] Hive Shims ......................................... SUCCESS [  1.674 s]
[INFO] Hive Common ........................................ SUCCESS [  5.711 s]
[INFO] Hive Serde ......................................... SUCCESS [  7.577 s]
[INFO] Hive Metastore ..................................... SUCCESS [ 18.044 s]
[INFO] Hive Ant Utilities ................................. SUCCESS [  1.373 s]
[INFO] Spark Remote Client ................................ SUCCESS [ 10.962 s]
[INFO] Hive Query Language ................................ SUCCESS [05:12 min]
[INFO] Hive Service ....................................... SUCCESS [ 42.408 s]
[INFO] Hive Accumulo Handler .............................. SUCCESS [01:40 min]
[INFO] Hive JDBC .......................................... SUCCESS [  9.021 s]
[INFO] Hive Beeline ....................................... SUCCESS [ 12.194 s]
[INFO] Hive CLI ........................................... SUCCESS [ 12.576 s]
[INFO] Hive Contrib ....................................... SUCCESS [  3.031 s]
[INFO] Hive HBase Handler ................................. SUCCESS [01:54 min]
[INFO] Hive HCatalog ...................................... SUCCESS [ 28.797 s]
[INFO] Hive HCatalog Core ................................. SUCCESS [  5.609 s]
[INFO] Hive HCatalog Pig Adapter .......................... SUCCESS [ 23.254 s]
[INFO] Hive HCatalog Server Extensions .................... SUCCESS [01:15 min]
[INFO] Hive HCatalog Webhcat Java Client .................. SUCCESS [  2.036 s]
[INFO] Hive HCatalog Webhcat .............................. SUCCESS [ 49.390 s]
[INFO] Hive HCatalog Streaming ............................ SUCCESS [  4.387 s]
[INFO] Hive HWI ........................................... SUCCESS [  1.768 s]
[INFO] Hive ODBC .......................................... SUCCESS [  1.053 s]
[INFO] Hive Shims Aggregator .............................. SUCCESS [  0.111 s]
[INFO] Hive TestUtils ..................................... SUCCESS [  0.550 s]
[INFO] Hive Packaging ..................................... SUCCESS [  3.195 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14:31 min
[INFO] Finished at: 2015-10-15T05:25:11-07:00
[INFO] Final Memory: 89M/416M

(2)清空相关输出:

mvn eclipse:clean

(3)编译成eclipse工程:

mvn eclipse:eclipse -DdownloadSources -DdownloadJavadocs -Phadoop-2


[INFO] Reactor Summary:
[INFO] 
[INFO] Hive ............................................... SUCCESS [  7.396 s]
[INFO] Hive Shims Common .................................. SUCCESS [  3.983 s]
[INFO] Hive Shims 0.20S ................................... SUCCESS [  2.734 s]
[INFO] Hive Shims 0.23 .................................... SUCCESS [ 16.801 s]
[INFO] Hive Shims Scheduler ............................... SUCCESS [  2.143 s]
[INFO] Hive Shims ......................................... SUCCESS [  1.958 s]
[INFO] Hive Common ........................................ SUCCESS [  4.495 s]
[INFO] Hive Serde ......................................... SUCCESS [  6.760 s]
[INFO] Hive Metastore ..................................... SUCCESS [  3.512 s]
[INFO] Hive Ant Utilities ................................. SUCCESS [  0.252 s]
[INFO] Spark Remote Client ................................ SUCCESS [  6.719 s]
[INFO] Hive Query Language ................................ SUCCESS [  7.988 s]
[INFO] Hive Service ....................................... SUCCESS [ 55.204 s]
[INFO] Hive Accumulo Handler .............................. SUCCESS [11:49 min]
[INFO] Hive JDBC .......................................... SUCCESS [  1.607 s]
[INFO] Hive Beeline ....................................... SUCCESS [35:22 min]
[INFO] Hive CLI ........................................... SUCCESS [01:28 min]
[INFO] Hive Contrib ....................................... SUCCESS [  1.797 s]
[INFO] Hive HBase Handler ................................. SUCCESS [10:35 min]
[INFO] Hive HCatalog ...................................... SUCCESS [  5.775 s]
[INFO] Hive HCatalog Core ................................. SUCCESS [01:23 min]
[INFO] Hive HCatalog Pig Adapter .......................... SUCCESS [01:10 min]
[INFO] Hive HCatalog Server Extensions .................... SUCCESS [07:20 min]
[INFO] Hive HCatalog Webhcat Java Client .................. SUCCESS [  1.968 s]
[INFO] Hive HCatalog Webhcat .............................. SUCCESS [01:53 min]
[INFO] Hive HCatalog Streaming ............................ SUCCESS [  2.089 s]
[INFO] Hive HWI ........................................... SUCCESS [  1.816 s]
[INFO] Hive ODBC .......................................... SUCCESS [  1.284 s]
[INFO] Hive Shims Aggregator .............................. SUCCESS [  0.064 s]
[INFO] Hive TestUtils ..................................... SUCCESS [  2.947 s]
[INFO] Hive Packaging ..................................... SUCCESS [  2.837 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:13 h
[INFO] Finished at: 2015-10-15T19:53:05-07:00
[INFO] Final Memory: 68M/306M

这个过程会比较慢;

编译后,文件大小大概有:391M左右



2. 编译后工程导入eclipse中

这里导入需要分为两种情况,分为导入windows下的eclipse和导入linux下的eclipse中;(因为一般使用机器都是windows的,所以如果可以使用windows,则最好)

2.1 工程导入windows的eclipse中;

打开eclipse,右键-> Import ,选择编译后的文件夹(这里需要把编译后的文件下载到windows上);即可看到如下的界面:



当然,这里会有些错误,比如jdk/tool.jar找不到等等,这个是因为编译的jdk和windows的jdk不一样,调整下即可。

(1)运行 hive-cli 工程的CliDriver(当然,要先启动hive相关进行,hive --service metastore & ;  hive --service hiveserver2 &)

         运行后会直接报错,说 driver “hive-site.xml ”not in Classpath 什么的错误,修改方法:

打开hive-common工程的本地目录的target/test-classes路径


修改里面的core-site.xml 以及hive-site.xml ,这里面的配置就参考hadoop集群以及hive的配置即可

然后再次运行CliDriver,发现报下面的错误:

Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4
	at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
这个是版本不匹配的错误,通过打印java的classpath,发现hadoop1的jar包在hadoop2的jar包前面


这样子肯定是有 问题的,集群都使用的是hadoop2的版本,但是代码却用的hadoop1,这样报这个错就没啥奇怪的了。那问题是出在了哪呢?

通过查看hive-shims-common工程,发现其工程的依赖只有hadoop1,没有hadoop2,而hive-cli工程也是依赖hive-shims-common工程,这也就解释了为什么java的classpath里面hadoop1的jar包在hadoop2前面了。

此路不通!

(2)运行hive-beeline工程的BeeLine

直接运行,进入beeline交互式命令终端,如下图:


发现是可以连接hive的,比如mr查询:


但是这个不可以调试,即使用debug模式,仍然不能调试。

所以对于阅读源码,查看调用关系来说这种模式也不是很好。

2.2 导入到linux的eclipse工程

   此导入和windows不无差别。


3. 直接新建工程,使用编译后的hive jar包(此处的jar包不是指自己编译的,而是官网直接提供的),就apache-hive-1.2.1-bin.tar.gz文件。

3.1 在windows的eclipse中新建hive工程


同时新建一个类,如上图所示。

这里还需要注意:

a. 引入编译后的hive的lib包的所有jar包;

b. 引入mysql的连接jar包;

c. 引入hadoop的相关jar包


(1)写一个测试程序,调用CliDriver,出现下面的错误:

2015-10-22 22:25:19,837  INFO [main] (HiveMetaStoreClient.java:376) - Trying to connect to metastore with URI thrift://192.168.0.100:9083
Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
	at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:662)
	at test.MainTest.main(MainTest.java:8)
Caused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
	at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1523)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:86)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:132)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:104)
	at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3005)
	at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3024)
	at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:503)
	... 2 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1521)
	... 8 more
Caused by: java.lang.NullPointerException
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1010)
	at org.apache.hadoop.util.Shell.runCommand(Shell.java:482)
	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.util.Shell.execCommand(Shell.java:808)
	at org.apache.hadoop.util.Shell.execCommand(Shell.java:791)
	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getUnixGroups(ShellBasedUnixGroupsMapping.java:84)
	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getGroups(ShellBasedUnixGroupsMapping.java:52)
	at org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback.getGroups(JniBasedUnixGroupsMappingWithFallback.java:51)
	at org.apache.hadoop.security.Groups.getGroups(Groups.java:176)
	at org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1488)
	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:436)
	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:236)
	at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:74)
	... 13 more

通过跟踪排查,发现是windows中的hadoop没有配置winutils.exe 所致

也就是最开始的错误:

Could not locate executable D:\jars\hadoop2.6\hadoop-2.6.0\bin\winutils.exe in the Hadoop binarie
(如果只是windows提交mr任务,这个没有配置,也是可以的,但是在hive源码里面有一个检查,如果是windows提交查询的话,需要检查,没有就会报空指针异常);

这个错误可以google之来修改,这里不说,下面也就没有再在这条路下面走了。


(2)写一个调用程序,运行BeeLine,这个没有测试。


3.2 linux的eclipse新建hive工程:

建立的工程和windows并无二致,如下:

同样编写程序调用CliDriver,Debug运行,如下所示(需要注意我在这里并没有配置hadoop相关目录):


做一个查询,看是否可以启动debug模式:

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