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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