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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6995) Block should be placed in the client's 'rack-local' node if 'client-local' node is not available
Date Thu, 04 Sep 2014 09:38:51 GMT
Vinayakumar B created HDFS-6995:
-----------------------------------

             Summary: Block should be placed in the client's 'rack-local' node if 'client-local'
node is not available
                 Key: HDFS-6995
                 URL: https://issues.apache.org/jira/browse/HDFS-6995
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
            Reporter: Vinayakumar B
            Assignee: Vinayakumar B



HDFS cluster is rack aware.
Client is in different node than of datanode,
but Same rack contains one or more datanodes.

In this case first preference should be given to select 'rack-local' node.

Currently, since no Node in clusterMap corresponds to client's location, blockplacement policy
choosing a *random* node as local node and proceeding for further placements.



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