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From "Chuan Liu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4374) Fix child task environment variable config and add support for Windows
Date Tue, 26 Jun 2012 18:53:44 GMT
Chuan Liu created MAPREDUCE-4374:
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             Summary: Fix child task environment variable config and add support for Windows
                 Key: MAPREDUCE-4374
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4374
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 1-win
            Reporter: Chuan Liu
            Priority: Minor


In HADOOP-2838, a new feature was introduced to set environment variables via the Hadoop config
'mapred.child.env' for child tasks. There are some further fixes and improvements around this
feature, e.g. HADOOP-5981 were a bug fix; MAPREDUCE-478 broke the config into 'mapred.map.child.env'
and 'mapred.reduce.child.env'.  However the current implementation is still not complete.
It does not match its documentation or original intend as I believe. Also, by using ‘:’
(colon) and ‘;’ (semicolon) in the configuration syntax, we will have problems using them
on Windows because ‘:’ appears very often in Windows path as in “C:\”, and environment
variables are used very often to hold path names. The Jira is created to fix the problem and
provide support on Windows.

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