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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4296) Spasm of JobClient failures on successful jobs every once in a while
Date Sat, 27 Sep 2008 17:13:46 GMT
Spasm of JobClient failures on successful jobs every once in a while
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                 Key: HADOOP-4296
                 URL: https://issues.apache.org/jira/browse/HADOOP-4296
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.17.1
            Reporter: Joydeep Sen Sarma
            Priority: Critical


At very busy times - we get a wave of job client failures all at the same time. the failures
come when the job is about to complete. when we look at the job history files - the jobs are
actually complete. Here's the stack:

08/09/27 02:18:00 INFO mapred.JobClient:  map 100% reduce 98%
08/09/27 02:18:41 INFO mapred.JobClient:  map 100% reduce 99% 
java.lang.NullPointerException
	at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:993)
	at com.facebook.hive.common.columnSetLoader.main(columnSetLoader.java:535)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:155)


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