Certain Pipes tasks fail, after exiting the C++ application
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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
Priority: Critical
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
fwm521075.inktomisearch.com 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
fwm521127.inktomisearch.com 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
fwm521160.inktomisearch.com 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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