Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-3550

Reduce tasks failing with OOM

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • 0.17.0
    • 0.17.1
    • None
    • None
    • Reviewed

    Description

      Map-Reduce jobs which worked with 0.16.* are failing with OOM with the following trace:

      java.lang.OutOfMemoryError: Java heap space
              at java.util.Arrays.copyOf(Arrays.java:2786)
              at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
              at java.io.DataOutputStream.write(DataOutputStream.java:90)
              at org.apache.hadoop.io.SequenceFile$UncompressedBytes.writeUncompressedBytes(SequenceFile.java:617)
              at org.apache.hadoop.mapred.ReduceTask$ValuesIterator.readNextValue(ReduceTask.java:289)
              at org.apache.hadoop.mapred.ReduceTask$ValuesIterator.next(ReduceTask.java:232)
              at org.apache.hadoop.mapred.ReduceTask$ReduceValuesIterator.next(ReduceTask.java:311)
              at org.apache.hadoop.streaming.PipeReducer.reduce(PipeReducer.java:67)
              at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:391)
              at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2124)
      

      Attachments

        1. 3550-0v17.patch
          1 kB
          Christopher Douglas
        2. 3550-0.patch
          1 kB
          Christopher Douglas

        Issue Links

          Activity

            People

              cdouglas Christopher Douglas
              acmurthy Arun Murthy
              Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: