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Posted to mapreduce-dev@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2011/06/11 20:55:58 UTC

[jira] [Created] (MAPREDUCE-2584) Check for serializers early, and give out more information regarding missing serializers

Check for serializers early, and give out more information regarding missing serializers
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                 Key: MAPREDUCE-2584
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2584
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: task
    Affects Versions: 0.20.2
            Reporter: Harsh J
            Assignee: Harsh J


As discussed on HADOOP-7328, MapReduce can handle serializers in a much better way in case of bad configuration, improper imports (Some odd Text class instead of the Writable Text set as key), etc..

This issue covers the MapReduce parts of the improvements (made to IFile, MapOutputBuffer, etc. and possible early-check of serializer availability pre-submit) that provide more information than just an NPE as is the current case.

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