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From "Johan Oskarson (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-457) Unable to create file in dfs in code run on machine not in the cluster.
Date Thu, 17 Aug 2006 14:44:17 GMT
Unable to create file in dfs in code run on machine not in the cluster.
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                 Key: HADOOP-457
                 URL: http://issues.apache.org/jira/browse/HADOOP-457
             Project: Hadoop
          Issue Type: Bug
          Components: dfs
    Affects Versions: 0.5.0
            Reporter: Johan Oskarson


I've got a tiny hadoop cluster and one machine that's not in the cluster that rsync the latest
version off the namenode/jobtracker machine. The machine that's not in the cluster is then
responsible for starting a few jobs here and there.

However, the latest trunk is unable to create files in the dfs from my code.
I'm using a simple new OutputStreamWriter(fs.create(file))); and the file creation looks like
it's going ok but then this gets thrown:

org.apache.hadoop.ipc.RemoteException: java.io.IOException: failed to create file /user/hadoop/submissions/1150000000/1152000000/1152440000/.1155824015.negsub.crc
on client "servernotincluster" because target-length is 0, below MIN_REPLICATION (1)
        at org.apache.hadoop.dfs.FSNamesystem.startFile(FSNamesystem.java:410)
        at org.apache.hadoop.dfs.NameNode.create(NameNode.java:202)
        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:585)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:332)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:468)

        at org.apache.hadoop.ipc.Client$Connection.run(Client.java:159)


If I add that machine to the conf/slaves it works fine. Note that it's trying to create that
file on the server that's not in the cluster.

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