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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-118) Namenode does not always clean up pendingCreates
Date Tue, 04 Apr 2006 16:30:43 GMT
Namenode does not always clean up pendingCreates
------------------------------------------------

         Key: HADOOP-118
         URL: http://issues.apache.org/jira/browse/HADOOP-118
     Project: Hadoop
        Type: Bug

  Components: dfs  
    Versions: 0.1.0    
 Environment: 195 node cluster running redhat linux (2.6 kernel)
    Reporter: Owen O'Malley
    Priority: Critical


In some failure modes, the pending creates list is not cleaned up and prevents that file from
ever being created.

When I try to create the file after the first job was killed (hours previously), I get:

060404 084619 Cannot start file because pendingCreates is non-null. src=/user/oom/rand/part000118
060404 084619 Server handler 0 on 8020 call error: java.io.IOException: Cannot create file
/user/oom/rand/part000118 on client DFSClient_-1656137458
java.io.IOException: Cannot create file /user/oom/rand/part000118 on client DFSClient_-1656137458
        at org.apache.hadoop.dfs.NameNode.create(NameNode.java:147)
        at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)


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