Hadoop之Linux源代码编译

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Hadoop开篇,按惯例。先编译源代码。导入到Eclipse。这样以后要了解那块,或者那块出问题了。直接找源代码。

编译hadoop2.4.1源代码之前。必须安装Maven和Ant环境,而且Hadoop须要protoc2.5.0的支持,所以还要下载protoc。我下载的是:protobuf-2.5.0.tar.bz2 

对protoc进行编译安装前先要装几个依赖包:gcc,gcc-c++,make 假设已经安装的能够忽略

yum install gcc
yum install gcc-c++
yum install make
yum install cmake  
yum install openssl-devel  
yum install ncurses-devel  

安装protoc

tar -xvf protobuf-2.5.0.tar.bz2  
cd protobuf-2.5.0  
./configure --prefix=/opt/protoc/  
make && make install

linux系统运行编译命令:mvn install eclipse:eclipse -Pdist,native -DskipTests -Dtar -Dmaven.javadoc.skip=true

编译完毕后。查看hadoop-dist目录:
[[email protected] target]# ll
total 153824
drwxr-xr-x. 2 root root      4096 Jul  9 17:00 antrun
-rw-r--r--. 1 root root      4809 Jul  9 17:00 dist-layout-stitching.sh
-rw-r--r--. 1 root root       666 Jul  9 17:01 dist-tar-stitching.sh
drwxr-xr-x. 9 root root      4096 Jul  9 17:00 hadoop-3.0.0-SNAPSHOT
-rw-r--r--. 1 root root 157482988 Jul  9 17:01 hadoop-3.0.0-SNAPSHOT.tar.gz
-rw-r--r--. 1 root root      3445 Jul  9 17:01 hadoop-dist-3.0.0-SNAPSHOT.jar
drwxr-xr-x. 2 root root      4096 Jul  9 17:01 maven-archiver
drwxr-xr-x. 2 root root      4096 Jul  9 17:00 test-dir
[[email protected] target]# pwd
/home/fish/hadoop/hadoop-dist/target

查看hadoop的版本号:
[[email protected] bin]# cd /home/fish/hadoop/hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/bin
[[email protected] bin]# ./hadoop version
Hadoop 3.0.0-SNAPSHOT
Source code repository https://github.com/apache/hadoop.git -r e0febce0e74ec69597376774f771da46834c42b1
Compiled by root on 2015-07-09T08:53Z
Compiled with protoc 2.5.0
From source with checksum d69dd13fde158d22d95a263a0f12bc8
This command was run using /home/fish/hadoop/hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/share/hadoop/common/hadoop-common-3.0.0-SNAPSHOT.jar
[[email protected] bin]# pwd
/home/fish/hadoop/hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/bin

查看编译的一些信息:
[[email protected] hadoop-3.0.0-SNAPSHOT]# file lib//native/*
lib//native/libhadoop.a:            current ar archive
lib//native/libhadooppipes.a:       current ar archive
lib//native/libhadoop.so:           symbolic link to `libhadoop.so.1.0.0'
lib//native/libhadoop.so.1.0.0:     ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped
lib//native/libhadooputils.a:       current ar archive
lib//native/libhdfs.a:              current ar archive
lib//native/libhdfs.so:             symbolic link to `libhdfs.so.0.0.0'
lib//native/libhdfs.so.0.0.0:       ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped
lib//native/libnativetask.a:        current ar archive
lib//native/libnativetask.so:       symbolic link to `libnativetask.so.1.0.0'
lib//native/libnativetask.so.1.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped
[[email protected] hadoop-3.0.0-SNAPSHOT]# pwd
/home/fish/hadoop/hadoop-dist/target/hadoop-3.0.0-SNAPSHOT

编译问题

问题1:

[ERROR] Failed to execute goal on project hadoop-common: Could not resolve dependencies for project org.apache.hadoop:hadoop-common:jar:3.0.0-SNAPSHOT: Failure to find org.apache.hadoop:hadoop-auth:jar:tests:3.0.0-SNAPSHOT in http
://10.0.1.88:8081/nexus/content/repositories/thirdparty/ was cached in the local repository, resolution will not be reattempted until the update interval of thirdparty has elapsed or updates are forced -> [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/DependencyResolutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :hadoop-common

改动.m2中的文件:

mv /root/.m2/repository/org/apache/hadoop/hadoop-auth/3.0.0-SNAPSHOT/hadoop-auth-3.0.0-SNAPSHOT-tests.jar.lastUpdated /root/.m2/repository/org/apache/hadoop/hadoop-auth/3.0.0-SNAPSHOT/hadoop-auth-3.0.0-SNAPSHOT-tests.jar
mv /root/.m2/repository/org/apache/hadoop/hadoop-kms/3.0.0-SNAPSHOT/hadoop-kms-3.0.0-SNAPSHOT-tests.jar.lastUpdated /root/.m2/repository/org/apache/hadoop/hadoop-kms/3.0.0-SNAPSHOT/hadoop-kms-3.0.0-SNAPSHOT-tests.jar
mv /root/.m2/repository/org/apache/hadoop/hadoop-hdfs/3.0.0-SNAPSHOT/hadoop-hdfs-3.0.0-SNAPSHOT-tests.jar.lastUpdated /root/.m2/repository/org/apache/hadoop/hadoop-hdfs/3.0.0-SNAPSHOT/hadoop-hdfs-3.0.0-SNAPSHOT-tests.jar

问题2:

还有些错误会报无法下载到jar,这样的情况能够登录到http://search.maven.org/官方库去看下这个包存不存在,假设存在的话,可能是由于网络原因,多运行几次就能够了。

问题3:

[[email protected] bin]# ./hadoop
: No such file or directory
改动hadoop命令为linux的格式:
dos2unix /home/fish/hadoop/hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/bin/hadoop

















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