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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1476) committer.needsTaskCommit should not be called for a task cleanup attempt
Date Mon, 15 Feb 2010 10:39:28 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833751#action_12833751
] 

Amareshwari Sriramadasu commented on MAPREDUCE-1476:
----------------------------------------------------

bq. -1 core tests.
TestCommandLineJobSubmission failed with NoClassDefFoundError. See MAPREDUCE-1275.
Stacktrace for the failure:
{noformat}
java.lang.NoClassDefFoundError: org/apache/hadoop/ipc/Server$Handler
	at org.apache.hadoop.ipc.Server.start(Server.java:1343)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.activate(NameNode.java:318)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:308)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:421)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:410)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1261)
	at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:278)
	at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:127)
{noformat}

> committer.needsTaskCommit should not be called for a task cleanup attempt
> -------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1476
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1476
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.22.0
>
>         Attachments: patch-1476-1.txt, patch-1476-2.txt, patch-1476-ydist.txt, patch-1476.txt
>
>
> Currently, Task.done() calls committer.needsTaskCommit() to know whether it needs a commit
or not. This need not be called for task cleanup attempt as no commit is required for a cleanup
attempt. 
> Due to MAPREDUCE-1409, we saw a case where cleanup attempt went into COMMIT_PENDING state.

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