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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5594) NameNode entered into an infinite loop of logging
Date Mon, 30 Mar 2009 17:38:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12693857#action_12693857
] 

Hairong Kuang commented on HADOOP-5594:
---------------------------------------

This infinite retry loop might be cased by the same problem reported in HADOOP-5311. The infinite
retry got fixed in HADOOP-3998. Runping, could you please check the dfs client log to provide
us more information?

> NameNode entered into an infinite loop of logging
> -------------------------------------------------
>
>                 Key: HADOOP-5594
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5594
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.0
>            Reporter: Runping Qi
>
> We have a cluster running Hadoop 0.19.0.
> For some reason, the name node entered into an infinite loop of spitting the following
message once every second:
> 2009-03-30 00:00:02,658 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: commitBlockSynchronization(lastblock=blk_2800657178116909860_14611,
newgenerationstamp=0, newlength=0, newtargets=[])
> 2009-03-30 00:00:02,658 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4 on 8088,
call commitBlockSynchronization(blk_2800657178116909860_14611, 0, 0, false, true, [Lorg.apache.hadoop.hdfs.protocol.DatanodeID;@1558378)
from 10.126.185.32:45347: error: java.io.IOException: Block (=blk_2800657178116909860_14611)
not found
> java.io.IOException: Block (=blk_2800657178116909860_14611) not found
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.commitBlockSynchronization(FSNamesystem.java:1898)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode.commitBlockSynchronization(NameNode.java:410)
> 	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:892)

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