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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/02/08 15:13:19 UTC

[jira] [Created] (TAJO-591) Implement Output Committer for commiting final outut files

Hyunsik Choi created TAJO-591:
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             Summary: Implement Output Committer for commiting final outut files
                 Key: TAJO-591
                 URL: https://issues.apache.org/jira/browse/TAJO-591
             Project: Tajo
          Issue Type: Improvement
            Reporter: Hyunsik Choi


In Tajo, when some task is failed, QueryMaster retries the task on another node. But, if the task belongs to the final step that generates output files in HDFS, this error occurs because the final output file already exists. In order to solve this problem, we have to implement some kind of output committer which would be similar to that of MR.



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