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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-15368) consider optimizing Utilities::handleMmTableFinalPath
Date Tue, 06 Dec 2016 04:32:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-15368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-15368:
---------------------------
    Affects Version/s: hive-14535

> consider optimizing Utilities::handleMmTableFinalPath
> -----------------------------------------------------
>
>                 Key: HIVE-15368
>                 URL: https://issues.apache.org/jira/browse/HIVE-15368
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: hive-14535
>            Reporter: Rajesh Balamohan
>
> Branch: hive-14535
> https://github.com/apache/hive/blob/hive-14535/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L4049
> When running "insert overwrite...on partitioned table" with 2000+ partitions, good amount
of time (~245 seconds) was spent in iterating every mmDirectory entry and checking its file
listings in S3. Creating this jira to consider optimizing this codepath, as information from
{{getMmDirectoryCandidates}} could be used in terms of reducing the number of times S3 needs
to be contacted.



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