Hive
  1. Hive
  2. HIVE-964

handle skewed keys for a join in a separate job

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major 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

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

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            People

            • Assignee:
              He Yongqiang
              Reporter:
              Namit Jain
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              Dates

              • Created:
                Updated:
                Resolved:

                Development