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From "Gilad Wolff (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3609) JobClient does not initialize conf member in all constructors
Date Fri, 30 Dec 2011 00:51:30 GMT
JobClient does not initialize conf member in all constructors
-------------------------------------------------------------

                 Key: MAPREDUCE-3609
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3609
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 0.20.205.0
            Reporter: Gilad Wolff
            Priority: Minor


The c'tor that takes a socket address does not initialize the configuration member:

public JobClient(InetSocketAddress jobTrackAddr, 
                   Configuration conf) throws IOException {
    this.ugi = UserGroupInformation.getCurrentUser();
    jobSubmitClient = createRPCProxy(jobTrackAddr, conf);
}

It should call setconf(conf). This leads to an NPE if a caller instantiates a job client using
the c'tor and tries to retrieve a job since the NetworkedJob c'tor tries to access the configuration.

The workaround is simple but "ugly" - the caller can call setconf explicitly.

I only checked on 0.20.205.0 but the problem may also exist upstream.

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