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Posted to issues@tajo.apache.org by "Jinho Kim (JIRA)" <ji...@apache.org> on 2014/12/29 16:17:13 UTC

[jira] [Created] (TAJO-1271) Improve memory usage in HashShuffleFileWriteExec

Jinho Kim created TAJO-1271:
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             Summary: Improve memory usage in HashShuffleFileWriteExec
                 Key: TAJO-1271
                 URL: https://issues.apache.org/jira/browse/TAJO-1271
             Project: Tajo
          Issue Type: Improvement
          Components: data shuffle
    Affects Versions: 0.9.0
            Reporter: Jinho Kim
            Assignee: Jinho Kim


Currently, HashShuffleFileWriteExec keep the cloned tuple list. and It written the tulples by count. This affects the jvm memory.
We should improve it as following :
* Keep the tuples in off-heap and reuse the row batch



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