Hive源码环境搭建(一)——源码编译

Hive源码环境搭建(一)——源码编译

北京时间：2020年04月21日12:16:00

Hive项目地址

本人环境：

系统：macOS 10.14.6、Maven版本：3.5.4、JDK版本：1.8.0_201

IDE版本：IntelliJ IDEA 2020.1

Hive版本：3.1.1（当前最新的HIve分支4.0我也编译了）

1、下载源码

1. 可以通过git clone xxxxxxx直接拉取分支

   例如：git clone https://github.com/apache/hive.git

2. 直接下载源码

   例如：https://codeload.github.com/apache/hive/tar.gz/rel/release-3.1.1

2、源码编译

进入源码的项目目录，例如：cd ~/code/java/hive-rel-release-3.1.1

1. 需要先执行：export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home

   （这是似乎是因为开发人员编译的环境变量会写脚本中，但是我们这里没有，这里好像也是Maven的一个bug）

2. 执行编译命令：mvn clean package -DskipTests -Phadoop-2 -Pdist

   当你看到BUILD SUCCESS时说明编译成功

   [INFO] Hive HCatalog Webhcat Java Client .................. SUCCESS [  1.932 s]
   [INFO] Hive HCatalog Webhcat .............................. SUCCESS [  6.526 s]
   [INFO] Hive HCatalog Streaming ............................ SUCCESS [ 55.170 s]
   [INFO] Hive HPL/SQL ....................................... SUCCESS [04:46 min]
   [INFO] Hive Streaming ..................................... SUCCESS [  1.450 s]
   [INFO] Hive Llap External Client .......................... SUCCESS [  1.428 s]
   [INFO] Hive Shims Aggregator .............................. SUCCESS [  0.047 s]
   [INFO] Hive Kryo Registrator .............................. SUCCESS [  8.624 s]
   [INFO] Hive TestUtils ..................................... SUCCESS [  0.085 s]
   [INFO] Hive Packaging 3.1.1 ............................... SUCCESS [ 51.884 s]
   [INFO] ------------------------------------------------------------------------
   [INFO] BUILD SUCCESS
   [INFO] ------------------------------------------------------------------------
   [INFO] Total time: 09:40 min
   [INFO] Finished at: 2020-04-21T11:27:26+08:00
   [INFO] ------------------------------------------------------------------------
   [WARNING] The requested profile "hadoop-2" could not be activated because it does not exist.
   

注意：

1. 在编译Hive 3.1.1时mvn报错：提示找不到javadoc这个工具

   [ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.4:javadoc (resourcesdoc.xml) on project hive-webhcat: An error has occurred in JavaDocs report generation:Unable to find javadoc command: The environment variable JAVA_HOME is not correctly set. -> [Help 1]
   [ERROR]
   [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
   [ERROR] Re-run Maven using the -X switch to enable full debug logging.
   [ERROR]
   [ERROR] For more information about the errors and possible solutions, please read the following articles:
   [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
   [ERROR]
   [ERROR] After correcting the problems, you can resume the build with the command
   [ERROR]   mvn <goals> -rf :hive-webhcat
   

   在查阅后发现这是可能是（众说纷纭）：

   1. 系统原因，开发人员使用的是Linux，但是这里是MacOS
   2. Maven插件maven-javadoc-plugin的bug导致的

   解决方法：

   在项目目录最外层的pom.xml的标签中加入${java.home}/../bin/javadoc

   <properties>
       <javadocExecutable>${java.home}/../bin/javadocjavadocExecutable>
       ......(其他的省略)
   properties>
   

   说明：就是直接告诉maven-javadoc-plugin插件javadoc的具体位置：/Library/Java/JavaVirtualMachines/jdk1.8.0_201.jdk/Contents/Home/bin/javadoc

3、导入IDEA

1. 选择File->New->Project from Existing Sources…（从已有源码导入项目）
   
2. 选择Hive的项目目录就行了
   
3. 接来下等IDEA慢慢导入就行了（需要很久的时间。。。）