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

     [ https://issues.apache.org/jira/browse/HIVE-5668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thejas M Nair updated HIVE-5668:
--------------------------------

    Attachment: HIVE-5668.1.patch

> 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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