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Posted to common-dev@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2007/08/24 18:25:30 UTC
[jira] Commented: (HADOOP-1740) Certain Pipes tasks fail, after
exiting the C++ application
[ https://issues.apache.org/jira/browse/HADOOP-1740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12522574 ]
Hadoop QA commented on HADOOP-1740:
-----------------------------------
+0, new Findbugs warnings
http://issues.apache.org/jira/secure/attachment/12364389/1740.patch
applied and successfully tested against trunk revision r569063,
but there appear to be new Findbugs warnings introduced by this patch.
New Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/613/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/613/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/613/console
> 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
> 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
> Attachments: 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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