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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5594) NameNode entered into an infinite loop of logging
Date Mon, 30 Mar 2009 17:14:50 GMT
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 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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