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Posted to mapreduce-dev@hadoop.apache.org by "Chuan Liu (JIRA)" <ji...@apache.org> on 2012/06/26 20:53:44 UTC
[jira] [Created] (MAPREDUCE-4374) Fix child task environment
variable config and add support for Windows
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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[jira] [Resolved] (MAPREDUCE-4374) Fix child task environment
variable config and add support for Windows
Posted by "Arun C Murthy (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAPREDUCE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy resolved MAPREDUCE-4374.
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Resolution: Fixed
Fix Version/s: 1-win
I just committed this. Thanks Chuan for the patch, and Bikas for the review.
> 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
> Assignee: Chuan Liu
> Priority: Minor
> Fix For: 1-win
>
> Attachments: MAPREDUCE-4374-branch-1-win-2.patch, MAPREDUCE-4374-branch-1-win.patch
>
>
> 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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