Hive
  1. Hive
  2. HIVE-1682

Wrong results with MAPJOIN when cols from non-MAPJOINed table are selected

        Details

        • Type: Bug Bug
        • Status: Resolved
        • Priority: Major Major
        • Resolution: Invalid
        • Affects Version/s: 0.7.0
        • Fix Version/s: None
        • Component/s: None
        • Labels:
          None
        • Environment:

          Hive trunk (rev 1003407)
          Hadoop 20.2

          Description

          Results of this query is wrong:

          set hive.mapjoin.cache.numrows=100;
          select /*+ MAPJOIN(invites) */ pokes.bar from pokes join invites on (pokes.bar = invites.bar);

          Results of all the queries below match:

          /* This is the same as problematic query without specifying numrows - which defaults to 25k much greater than the number of rows in pokes table */
          select /*+ MAPJOIN(invites) */ pokes.bar from pokes join invites on (pokes.bar = invites.bar)

          set hive.mapjoin.cache.numrows=100;
          select /*+ MAPJOIN(invites) */ invites.bar from pokes join invites on (pokes.bar = invites.bar);

          select invites.bar from pokes join invites on (pokes.bar = invites.bar);

          select pokes.bar from pokes join invites on (pokes.bar = invites.bar);

            Activity

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            Thiruvel Thirumoolan added a comment -

            Problem does not appear anymore.

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            Thiruvel Thirumoolan added a comment - Problem does not appear anymore.

              People

              • Assignee:
                Unassigned
                Reporter:
                Thiruvel Thirumoolan
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                Dates

                • Created:
                  Updated:
                  Resolved:

                  Development