Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-7292 Hive on Spark
  3. HIVE-7767

hive.optimize.union.remove does not work properly [Spark Branch]

    XMLWordPrintableJSON

    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.1.0
    • Component/s: None
    • Labels:
      None

      Description

      Turing on the hive.optimize.union.remove property generates wrong union all result.

      For Example:

      create table inputTbl1(key string, val string) stored as textfile;
      load data local inpath '../../data/files/T1.txt' into table inputTbl1;
      SELECT *
      FROM (
        SELECT key, count(1) as values from inputTbl1 group by key
        UNION ALL
        SELECT key, count(1) as values from inputTbl1 group by key
      ) a;  
      

      when the hive.optimize.union.remove is turned on, the query result is like:

      1	1
      2	1
      3	1
      7	1
      8	2
      

      when the hive.optimize.union.remove is turned off, the query result is like:

      7	1
      2	1
      8	2
      3	1
      1	1
      7	1
      2	1
      8	2
      3	1
      1	1
      

      The expected query result is:

      7	1
      2	1
      8	2
      3	1
      1	1
      7	1
      2	1
      8	2
      3	1
      1	1
      

        Attachments

        1. HIVE-7767.1-spark.patch
          267 kB
          Na Yang
        2. HIVE-7767.2-spark.patch
          278 kB
          Brock Noland
        3. HIVE-7767.2-spark.patch
          278 kB
          Na Yang
        4. HIVE-7767.3-spark.patch
          246 kB
          Na Yang

          Issue Links

            Activity

              People

              • Assignee:
                nyang Na Yang
                Reporter:
                nyang Na Yang
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: