Pig
  1. Pig
  2. PIG-1283

COUNT on null bag causes failure

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.11
    • Component/s: impl
    • Labels:

      Description

      grunt> l = load '/tmp/e.bag' as (b : bag

      {t: (i : int)}

      , a : int);

      1. b is null for the only row
        grunt> c = foreach l generate COUNT(b);
        grunt> dump c

      It results in following exception-

      org.apache.pig.backend.executionengine.ExecException: ERROR 2106: Error while computing count in COUNT
      at org.apache.pig.builtin.COUNT.exec(COUNT.java:59)
      at org.apache.pig.builtin.COUNT.exec(COUNT.java:39)
      at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:212)
      at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:293)
      at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:358)
      at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:288)
      at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.runPipeline(PigMapBase.java:232)
      at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:227)
      at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:52)
      at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
      at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:583)
      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
      at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:176)
      Caused by: java.lang.NullPointerException
      at org.apache.pig.builtin.COUNT.exec(COUNT.java:46)
      ... 12 more

      1. PIG-1283-1.patch
        0.5 kB
        Anandha L Ranganathan
      2. PIG-1283-2.patch
        1 kB
        Anandha L Ranganathan
      3. pig_1283-3.patch
        2 kB
        Anandha L Ranganathan

        Activity

        Thejas M Nair created issue -
        Thejas M Nair made changes -
        Field Original Value New Value
        Labels newbie
        Anandha L Ranganathan made changes -
        Attachment PIG-1283-1.patch [ 12542355 ]
        Anandha L Ranganathan made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Daniel Dai made changes -
        Assignee Anand L Ranganathan [ analog.sony ]
        Anandha L Ranganathan made changes -
        Status Patch Available [ 10002 ] In Progress [ 3 ]
        Anandha L Ranganathan made changes -
        Attachment PIG-1283-2.patch [ 12548864 ]
        Anandha L Ranganathan made changes -
        Status In Progress [ 3 ] Open [ 1 ]
        Dmitriy V. Ryaboy made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Anandha L Ranganathan made changes -
        Attachment pig_1283-3.patch [ 12549061 ]
        Jonathan Coveney made changes -
        Resolution Fixed [ 1 ]
        Status Patch Available [ 10002 ] Resolved [ 5 ]
        Rohini Palaniswamy made changes -
        Fix Version/s 0.11 [ 12318878 ]

          People

          • Assignee:
            Anandha L Ranganathan
            Reporter:
            Thejas M Nair
          • Votes:
            1 Vote for this issue
            Watchers:
            7 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development