Vinayakumar B created HDFS-6995:
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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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