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Posted to common-dev@hadoop.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2010/04/09 06:45:50 UTC

[jira] Created: (HADOOP-6695) Job Tracker should be able to refresh classpath without restarting

Job Tracker should be able to refresh classpath without restarting
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                 Key: HADOOP-6695
                 URL: https://issues.apache.org/jira/browse/HADOOP-6695
             Project: Hadoop Common
          Issue Type: Improvement
          Components: conf
    Affects Versions: 0.20.1
            Reporter: Ted Yu


When I tried to run HBase export in cluster mode, I copied zookeeper-3.2.1.jar to hadoop lib directory.
But initial attempts failed with java.lang.ClassNotFoundException because job tracker wasn't restarted.

It is desirable for job tracker to pick up new classpath without restarting which is sometimes hard to do in production environment.

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