Hadoop 安装及报错解决方法论

Da数据时代 ，不掌握点hadoop生态体系可还行。今儿记录下64位centos6.9安装hadoop2.7.6过程。

 

第一次安装图方便，直接下载了安装包，一路顺利安装完成，执行第一个mapredurce时报错。

意识到64位系统，hadoop编译安装的重要性，重新来过。

一、编译hadoop

1.hadoop-2.7.6-src.tar.gz hadoop官网下载资源包；

2.解压后目录下有个说明文档BUILDING.txt。

按照Requirements的要求装好所有编译需要软件，此处不做细致介绍。清单中每一个都不能少，否则编译过程会让你很痛苦。

 

Requirements:

* Unix System
* JDK 1.7+
* Maven 3.0 or later
* Findbugs 1.3.9 (if running findbugs)
* ProtocolBuffer 2.5.0
* CMake 2.6 or newer (if compiling native code), must be 3.0 or newer on Mac
* Zlib devel (if compiling native code)
* openssl devel ( if compiling native hadoop-pipes and to get the best HDFS encryption performance )
* Linux FUSE (Filesystem in Userspace) version 2.6 or above ( if compiling fuse_dfs )
* Internet connection for first build (to fetch all Maven and Hadoop dependencies)

 3. 开始编译，进入解压目录后 执行：

 

 mvn package -Pdist,native,docs -DskipTests -Dtar

 

二、遇到问题：

1.编译到hadoop tools时报错退出：

Apache Hadoop tools FAILURE

检查了一般Requirements发现有软件包没准备好

yum install zlib zlib-devel

yum install openssl devel

yum install openssl openssl--devel

 重新编译，问题解决。

2.编译到Apache Hadoop Pipes FAILURE

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (make) on project hadoop-common: An Ant BuildException has occured: exec returned: 1
[ERROR] around Ant part …<exec dir=”/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/native” executable=”cmake” failonerror=”true”>… @ 5:125 in /export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/antrun/build-main.xml

此时继续检查 Requirements，每个软件都已安装。反复尝试了半天没有解决。

只好仔细查看日志，报错信息大概含义是:根据/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/antrun/build-main.xml这个文件,编译其中某处时报错。

打开文件,找到exec标签所执行的内容（标红）:

root@node-1 bin]# cd /export/
[root@node-1 export]# cd /export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/antrun
[root@node-1 antrun]# pwd
/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/antrun
[root@node-1 antrun]# ls
build-main.xml
[root@node-1 antrun]# cat build-main.xml
<?xml version="1.0" encoding="UTF-8" ?>
<project name="maven-antrun-" default="main"  >
<target name="main" if="tar">
  <echo file="/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target/dist-maketar.sh">cd &quot;/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target&quot;
                      tar cf - hadoop-common-2.7.6 | gzip &gt; hadoop-common-2.7.6.tar.gz</echo>
  <exec failonerror="true" dir="/export/server/hadoop-2.7.6-src/hadoop-common-project/hadoop-common/target" executable="sh">
    <arg line="./dist-maketar.sh"/>
  </exec>
</target>

 通过sh 执行./dist-maketar.sh脚本，那么我们就在命令行 执行下该脚本，即可看到具体错误信息，根据错误信息配置相关软件包即可。

 

 

ps：本次安装过程中还遇到一个cmake 的报错。

后来发现是 openssl报错，我只安装了 openssl 并没有按装openssl-devel。

二者不同之处是，后者为开发包，编译过程需要后者。

 

INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 43:57 min
[INFO] Finished at: 2018-05-15T08:56:26-07:00
[INFO] Final Memory: 129M/393M
[INFO] ------------------------------------------------------------------------

 编译成功，晒一下。