Jing Zhao created HDFS-3887:
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Summary: Remove redundant chooseTarget methods in
BlockPlacementPolicy.java
Key: HDFS-3887
URL: https://issues.apache.org/jira/browse/HDFS-3887
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 3.0.0
Reporter: Jing Zhao
Assignee: Jing Zhao
Priority: Trivial
BlockPlacementPolicy.java contains multiple chooseTarget() methods with
different parameter lists. It is difficult to follow and understand the code
since some chooseTarget methods only have minor differences and some of them
are only invoked by testing code.
In this patch, I try to remove some of the chooseTarget methods and only keep
three of them: two abstract methods and the third one using BlockCollection as
its parameter.
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