Junping Du created HADOOP-8471:
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Summary: Make ReplicaPlacementPolicyDefault extensible for reuse
code in subclass
Key: HADOOP-8471
URL: https://issues.apache.org/jira/browse/HADOOP-8471
Project: Hadoop Common
Issue Type: Sub-task
Components: ha, io
Affects Versions: 2.0.0-alpha, 1.0.0
Reporter: Junping Du
Assignee: Junping Du
ReplicaPlacementPolicy is already a pluggable component in Hadoop. A user
specified ReplicaPlacementPolicy can be specified in the hdfs-site.xml
configuration under the key "dfs.block.replicator.classname". However, to make
it possible to reuse code in ReplicaPlacementPolicyDefault a few of its methods
were changed from private to protected. ReplicaPlacementPolicy and
BlockPlacementPolicyDefault are currently annotated with
@InterfaceAudience.Private.
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