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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1099) Setup and cleanup tasks could affect job latency if they are caught running on bad nodes
Date Tue, 13 Oct 2009 06:14:31 GMT
Setup and cleanup tasks could affect job latency if they are caught running on bad nodes
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                 Key: MAPREDUCE-1099
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1099
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobtracker
    Affects Versions: 0.20.1
            Reporter: Hemanth Yamijala


We found cases on our clusters where a setup task got scheduled on a bad node and took upwards
of several minutes to run, adversely affecting job runtimes. Speculation did not help here
as speculation is not used for setup tasks. I suspect the same could happen for cleanup tasks
as well.

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