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From "Rajesh Balamohan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-15368) consider optimizing Utilities::handleMmTableFinalPath
Date Tue, 06 Dec 2016 04:29:59 GMT
Rajesh Balamohan created HIVE-15368:
---------------------------------------

             Summary: consider optimizing Utilities::handleMmTableFinalPath
                 Key: HIVE-15368
                 URL: https://issues.apache.org/jira/browse/HIVE-15368
             Project: Hive
          Issue Type: Sub-task
            Reporter: Rajesh Balamohan
            Priority: Minor


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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