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Posted to mapreduce-dev@hadoop.apache.org by "Hemanth Yamijala (JIRA)" <ji...@apache.org> on 2009/10/13 08:14:31 UTC

[jira] Created: (MAPREDUCE-1099) Setup and cleanup tasks could affect job latency if they are caught running on bad nodes

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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