Amithsha created HDFS-14220:
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Summary: Enable Replica Placement Value Per Rack
Key: HDFS-14220
URL: https://issues.apache.org/jira/browse/HDFS-14220
Project: Hadoop HDFS
Issue Type: New Feature
Components: datanode
Affects Versions: 2.7.1
Reporter: Amithsha
By default, Replica placement per rack will be taken care by
BlockPlacementPolicyDefault.java .
With 2 if conditions
# numOfRacks <1
# numOfRacks > 1
and the placement will happen as 1 on localrack, 2 on remote rack.
If a user needs max of 1 replica per rack then he need to modify the
BlockPlacementPolicyDefault.java
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