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Posted to dev@hive.apache.org by "Thejas M Nair (JIRA)" <ji...@apache.org> on 2013/10/28 09:46:31 UTC

[jira] [Created] (HIVE-5668) path normalization in MapOperator is expensive

Thejas M Nair created HIVE-5668:
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             Summary: path normalization in MapOperator is expensive
                 Key: HIVE-5668
                 URL: https://issues.apache.org/jira/browse/HIVE-5668
             Project: Hive
          Issue Type: Bug
            Reporter: Thejas M Nair
            Assignee: Thejas M Nair
         Attachments: HIVE-5668.1.patch

The conversion of paths in MapWork.getPathToAliases is happening multiple times in MapOperator.cleanUpInputFileChangedOp. Caching the results of conversion can improve the performance of hive map tasks.




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