Extend the pluggable block placement policy interface to handle/allow
file-level intelligence
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Key: HDFS-1451
URL: https://issues.apache.org/jira/browse/HDFS-1451
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 0.21.0
Reporter: Harold Lim
The current pluggable block placement policy interface
(https://issues.apache.org/jira/browse/HDFS-385) sets the policy globally. I
propose to have this interface be extended to allow setting the policy on a
file-level basis. For example, there may be cases where certain files may
simply need the default policy and certain other files need more complex block
placement policies.
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