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From "Adam Kramer (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3244) Make nodes fail/succeed based on return codes (regardless of pending data)
Date Sat, 22 Oct 2011 01:00:38 GMT
Make nodes fail/succeed based on return codes (regardless of pending data)
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                 Key: MAPREDUCE-3244
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3244
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Adam Kramer
            Priority: Minor


If I were to run a MR job with a script like 'head -n10' for some reason, each node would
execute head -n10 (good), and output 10 rows (good) and then the 'head' program would return
success and quit (good), and all the nodes would fail (bad) because there's a ton of pending
data (irrelevant).

For purposes of streaming data through programs, Hadoop should trust the program's return
code.

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