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  1. Hive
  2. HIVE-964

handle skewed keys for a join in a separate job

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.6.0
    • Component/s: Query Processor
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The skewed keys can be written to a temporary table or file, and a followup conditional task can be used to perform the join on those keys.
      As a first step, JDBM can be used for those keys

        Attachments

        1. hive-964-2010-01-15-4.patch
          2.24 MB
          He Yongqiang
        2. hive-964-2010-01-14-3.patch
          2.26 MB
          He Yongqiang
        3. hive-964-2010-01-13-2.patch
          221 kB
          He Yongqiang
        4. hive-964-2010-01-08.patch
          293 kB
          He Yongqiang
        5. hive-964-2009-12-29-4.patch
          639 kB
          He Yongqiang
        6. hive-964-2009-12-28-2.patch
          621 kB
          He Yongqiang
        7. hive-964-2009-12-17.txt
          59 kB
          He Yongqiang

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              • Assignee:
                he yongqiang He Yongqiang
                Reporter:
                namit Namit Jain
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                Dates

                • Created:
                  Updated:
                  Resolved: