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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-7148) Use murmur hash to create bucketed tables
Date Fri, 30 May 2014 04:48:02 GMT
Gunther Hagleitner created HIVE-7148:
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             Summary: Use murmur hash to create bucketed tables
                 Key: HIVE-7148
                 URL: https://issues.apache.org/jira/browse/HIVE-7148
             Project: Hive
          Issue Type: Bug
            Reporter: Gunther Hagleitner


HIVE-7121 introduced murmur hashing for queries that don't insert into bucketed tables. This
was done to achieve better distribution of the data. The same should be done for bucketed
tables as well, but this involves making sure we don't break backwards compat. This probably
means that we have to store the partitioning function used in the metadata and use that to
determine if SMB and bucketed map-join optimizations apply.



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