在本地或 mapreduce 模式下运行 pig 时遇到问题 [英] Trouble running pig in both local or mapreduce mode

问题描述

我的 Ubuntu VM 上已经运行了 Hadoop 1.2，该 VM 运行在 Windows 7 机器上.我最近在同一个 Ubuntu VM 上安装了 Pig 0.12.0.我已经从 apache 网站下载了 pig-0.12.0.tar.gz.我已经正确设置了所有变量，例如 JAVA_HOME、HADOOP_HOME、PIG_HOME 变量.当我尝试在本地模式下启动 pig 时，我看到的是:

I already have Hadoop 1.2 running on my Ubuntu VM which is running on Windows 7 machine. I recently installed Pig 0.12.0 on my same Ubuntu VM. I have downloaded the pig-0.12.0.tar.gz from the apache website. I have all the variables such as JAVA_HOME, HADOOP_HOME, PIG_HOME variables set correctly. When I try to start pig in local mode this is what I see:

chandeln@ubuntu:~$ pig -x local
pig: invalid option -- 'x'
usage: pig

chandeln@ubuntu:~$ echo $JAVA_HOME
/usr/lib/jvm/java7  
chandeln@ubuntu:~$ echo $HADOOP_HOME
/usr/local/hadoop
chandeln@ubuntu:~$ echo $PIG_HOME
/usr/local/pig
chandeln@ubuntu:~$ which pig
/usr/games/pig

chandeln@ubuntu:~$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/jvm/java7/bin:/usr/local/hadoop/bin:/usr/local/pig/bin

由于我不是 Unix 专家，我不确定这是否是问题所在，但是命令 which pig 实际上返回的是 /usr/games/pig 而不是 /usr/local/pig.这是问题的根本原因吗?

Since I am not a Unix expert I am not sure if this is the problem but the command which pig actually returns /usr/games/pig instead of /usr/local/pig. Is this the root cause of the problem?

请指导.

推荐答案

我能够通过更改 .bashrc 中的以下几行来解决该问题.这优先于 /usr/local/pig 目录而不是 /usr/games/pig

I was able to fix the problem by changing the following lines in my .bashrc. This gave precedence to the /usr/local/pig directory instead of /usr/games/pig

BEFORE: export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$PIG_HOME/bin
AFTER: export PATH=$JAVA_HOME/bin:$HADOOP_HOME/bin:$PIG_HOME/bin:$PATH

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