Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.14.0
    • Fix Version/s: 0.15.0
    • Component/s: None
    • Labels:
      None

      Description

      Under pipes, when specifying number of reducers to zero, all map tasks fail:

      java.io.IOException: pipe child exception
      at org.apache.hadoop.mapred.pipes.Application.abort(Application.java:124)
      at org.apache.hadoop.mapred.pipes.PipesMapRunner.run(PipesMapRunner.java:82)
      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:189)
      at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1763)
      Caused by: java.net.SocketException: Connection reset
      at java.net.SocketInputStream.read(SocketInputStream.java:168)
      at java.net.SocketInputStream.read(SocketInputStream.java:182)
      at java.io.DataInputStream.readByte(DataInputStream.java:248)
      at org.apache.hadoop.io.WritableUtils.readVLong(WritableUtils.java:313)
      at org.apache.hadoop.io.WritableUtils.readVInt(WritableUtils.java:335)
      at org.apache.hadoop.mapred.pipes.BinaryProtocol$UplinkReaderThread.run(BinaryProtocol.java:101)

        Activity

        Hide
        Hudson added a comment -
        Show
        Hudson added a comment - Integrated in Hadoop-Nightly #248 (See http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/248/ )
        Hide
        Devaraj Das added a comment -

        I just committed this. Thanks, Owen!

        Show
        Devaraj Das added a comment - I just committed this. Thanks, Owen!
        Hide
        Hadoop QA added a comment -

        +1 overall. Here are the results of testing the latest attachment
        http://issues.apache.org/jira/secure/attachment/12366154/pipe-no-reduce.patch
        against trunk revision r577171.

        @author +1. The patch does not contain any @author tags.

        javadoc +1. The javadoc tool did not generate any warning messages.

        javac +1. The applied patch does not generate any new compiler warnings.

        findbugs +1. The patch does not introduce any new Findbugs warnings.

        core tests +1. The patch passed core unit tests.

        contrib tests +1. The patch passed contrib unit tests.

        Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/testReport/
        Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
        Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/artifact/trunk/build/test/checkstyle-errors.html
        Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/console

        This message is automatically generated.

        Show
        Hadoop QA added a comment - +1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12366154/pipe-no-reduce.patch against trunk revision r577171. @author +1. The patch does not contain any @author tags. javadoc +1. The javadoc tool did not generate any warning messages. javac +1. The applied patch does not generate any new compiler warnings. findbugs +1. The patch does not introduce any new Findbugs warnings. core tests +1. The patch passed core unit tests. contrib tests +1. The patch passed contrib unit tests. Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/testReport/ Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/artifact/trunk/build/test/checkstyle-errors.html Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/789/console This message is automatically generated.
        Hide
        Owen O'Malley added a comment -

        This patch fixes the problem and adds a unit test to ensure that it works.

        Show
        Owen O'Malley added a comment - This patch fixes the problem and adds a unit test to ensure that it works.

          People

          • Assignee:
            Owen O'Malley
            Reporter:
            Christian Kunz
          • Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development