Hive
  1. Hive
  2. HIVE-790

race condition related to ScriptOperator + UnionOperator

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.4.0
    • Component/s: Query Processor
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      ScriptOperator uses a second thread to output the rows to the children operators. In a corner case which contains a union, 2 threads might be outputting data into the same operator hierarchy and caused race conditions.

      CREATE TABLE tablea (cola STRING);
      SELECT *
      FROM (
          SELECT TRANSFORM(cola)
          USING 'cat'
          AS cola
          FROM tablea
        UNION ALL
          SELECT cola as cola
          FROM tablea
      ) a;
      
      1. Hive-790.patch
        11 kB
        Ning Zhang
      2. Hive-790_2.patch
        12 kB
        Ning Zhang
      3. Hive-790_3.patch
        12 kB
        Ning Zhang
      4. Hive-790_4.patch
        19 kB
        Ning Zhang
      5. Hive_790_0.4.0.patch
        18 kB
        Ning Zhang

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Ning Zhang
            Reporter:
            Zheng Shao
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            Dates

            • Created:
              Updated:
              Resolved:

              Development