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Posted to mapreduce-issues@hadoop.apache.org by "Antonio Piccolboni (JIRA)" <ji...@apache.org> on 2011/07/19 19:26:58 UTC
[jira] [Created] (MAPREDUCE-2712) add stdin to mapdebug and
reducedebug scripts in streaming
add stdin to mapdebug and reducedebug scripts in streaming
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Key: MAPREDUCE-2712
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2712
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: contrib/streaming
Affects Versions: 0.20.2
Reporter: Antonio Piccolboni
The current syntax for the mapdebug and reducedebug scripts is $script $stdout $stderr $syslog $jobconf, which seems appropriate for task failure post-analysis. But it seems more than natural to want to inspect or analyze the input to see under what input the task failed, up to rerunning the task say in debug mode or with other monitoring in place. So why not make it $script $stdin $stdout $stderr $syslog $jobconf to complete the circle? See also https://issues.apache.org/jira/browse/MAPREDUCE-2076
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[jira] [Commented] (MAPREDUCE-2712) add stdin to mapdebug and
reducedebug scripts in streaming
Posted by "Aaron T. Myers (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAPREDUCE-2712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127285#comment-13127285 ]
Aaron T. Myers commented on MAPREDUCE-2712:
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Hey Antonio, this seems like a reasonable proposal to me. Could you prepare a patch which would implement this? If so, please provide a patch for trunk and optionally another patch which can be applied to branch-0.20-security.
> add stdin to mapdebug and reducedebug scripts in streaming
> ----------------------------------------------------------
>
> Key: MAPREDUCE-2712
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2712
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/streaming
> Affects Versions: 0.20.2
> Reporter: Antonio Piccolboni
>
> The current syntax for the mapdebug and reducedebug scripts is $script $stdout $stderr $syslog $jobconf, which seems appropriate for task failure post-analysis. But it seems more than natural to want to inspect or analyze the input to see under what input the task failed, up to rerunning the task say in debug mode or with other monitoring in place. So why not make it $script $stdin $stdout $stderr $syslog $jobconf to complete the circle? See also https://issues.apache.org/jira/browse/MAPREDUCE-2076
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