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From "Nigel Daley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1071) RPC$VersionMismatch exception is not fatal to JobTracker
Date Tue, 06 Mar 2007 23:14:24 GMT
RPC$VersionMismatch exception is not fatal to JobTracker
--------------------------------------------------------

                 Key: HADOOP-1071
                 URL: https://issues.apache.org/jira/browse/HADOOP-1071
             Project: Hadoop
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.12.0
            Reporter: Nigel Daley


The following exception should be fatal to the JT, but isn't.  Instead, this exception is
repeated every 1 second forever.

2007-03-06 23:07:35,947 WARN org.apache.hadoop.mapred.JobTracker: Error starting tracker:
org.apache.hadoop.ipc.RPC$VersionMismatch: Protocol org.apache.hadoop.dfs.ClientProtocol v
ersion mismatch. (client = 7, server = 10)
        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:253)
        at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:106)
        at org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSystem.java:65)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:160)
        at org.apache.hadoop.fs.FileSystem.getNamed(FileSystem.java:119)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:91)
        at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:546)
        at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:76)
        at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:1600)


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