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From "Dave Marion (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6376) Distcp data between two HA clusters requires another configuration
Date Mon, 12 May 2014 21:58:15 GMT
Dave Marion created HDFS-6376:
---------------------------------

             Summary: Distcp data between two HA clusters requires another configuration
                 Key: HDFS-6376
                 URL: https://issues.apache.org/jira/browse/HDFS-6376
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: federation
    Affects Versions: 2.3.0
         Environment: CDH 5.0 (Apache 2.3.0 + some patches)
            Reporter: Dave Marion


User has to create a third set of configuration files for distcp when transferring data between
two HA clusters.

Consider the scenario in [1]. You cannot put all of the required properties in core-site.xml
and hdfs-site.xml for the client to resolve the location of both active namenodes. If you
do, then the datanodes from cluster A may join cluster B. I can not find a configuration option
that tells the datanodes to federate blocks for only one of the clusters in the configuration.


[1] http://mail-archives.apache.org/mod_mbox/hadoop-user/201404.mbox/%3CBAY172-W2133964E0C283968C161DD1520%40phx.gbl%3E



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