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https://issues.apache.org/jira/browse/HADOOP-1740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Devaraj Das updated HADOOP-1740:
--------------------------------
Status: Open (was: Patch Available)
> Certain Pipes tasks fail, after exiting the C++ application
> -----------------------------------------------------------
>
> Key: HADOOP-1740
> URL: https://issues.apache.org/jira/browse/HADOOP-1740
> Project: Hadoop
> Issue Type: Bug
> Components: pipes
> Affects Versions: 0.14.0
> Environment: Version: 0.15.0-dev, r565628
> Compiled: Tue Aug 14 20:55:37 UTC 2007 by hadoopqa
> 165 nodes
> Reporter: Srikanth Kakani
> Assignee: Devaraj Das
> Priority: Blocker
> Fix For: 0.14.1
>
> Attachments: 1740.patch, 1740.patch
>
>
> Steps to reproduce:
> Run a pipes job. I had 1182 mappers and 300 reducers and produced
> 4,353,892,559 records and 212,030,552,146 bytes output.
> Some of the tasks failed (randomly), all had the same exception (probably a
> race condition)
> task_200708201818_0002_m_000681_0 tip_200708201818_0002_m_000681 node075
> FAILED
> java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:592)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:190)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1800)
> Last 4KB
> Last 8KB
> All
> task_200708201818_0002_m_000681_1 tip_200708201818_0002_m_000681
> node1127 FAILED
> java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:592)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:190)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1800)
> Last 4KB
> Last 8KB
> All
> task_200708201818_0002_m_000868_0 tip_200708201818_0002_m_000868 node160
> FAILED
> java.io.IOException: Task process exit with nonzero status of 1.
> at org.apache.hadoop.mapred.TaskRunner.runChild(TaskRunner.java:405)
> at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:291)
> Last 4KB
> Last 8KB
> All
> 2007-08-20 19:25:59,909 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> Initializing JVM Metrics with processName=MAP, sessionId=
> 2007-08-20 19:26:00,002 INFO org.apache.hadoop.mapred.MapTask:
> numReduceTasks: 300
> 2007-08-20 19:26:01,344 INFO org.apache.hadoop.util.NativeCodeLoader: Loaded
> the native-hadoop library
> 2007-08-20 19:26:01,345 INFO org.apache.hadoop.io.compress.zlib.ZlibFactory:
> Successfully loaded & initialized native-zlib library
> 2007-08-20 19:49:26,727 WARN org.apache.hadoop.mapred.TaskTracker: Error
> running child
> java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:592)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:190)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1800)
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