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  1. Tajo
  2. TAJO-833

NPE occurs when using the column as a alias name in the multiple DISTINCT.

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.9.0, 0.8.1
    • Component/s: None
    • Labels:
      None

      Description

      See title. The next query using column name l_partkey as alias throws NPE.

      select
          lineitem.l_orderkey as l_orderkey,
          lineitem.l_partkey as l_partkey,
          count(distinct lineitem.l_partkey) as cnt1,
          count(distinct lineitem.l_suppkey) as cnt2,
          sum(lineitem.l_quantity) as sum1
      from
          lineitem
      group by
          lineitem.l_orderkey, lineitem.l_partkey
      
      2014-05-16 16:28:42,963 ERROR org.apache.tajo.worker.Task:
      java.lang.NullPointerException
              at org.apache.tajo.storage.VTuple.getFloat8(VTuple.java:151)
              at org.apache.tajo.storage.RawFile$RawFileAppender.addTuple(RawFile.java:640)
              at org.apache.tajo.engine.planner.physical.HashShuffleFileWriteExec.next(HashShuffleFileWriteExec.java:120)
              at org.apache.tajo.worker.Task.run(Task.java:383)
              at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:391)
              at java.lang.Thread.run(Thread.java:744)
      

        Attachments

        1. TAJO-833.patch
          14 kB
          Hyoungjun Kim

          Activity

            People

            • Assignee:
              hjkim Hyoungjun Kim
              Reporter:
              hjkim Hyoungjun Kim
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              Dates

              • Created:
                Updated:
                Resolved: