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https://issues.apache.org/jira/browse/HDFS-629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756875#action_12756875
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Konstantin Shvachko commented on HDFS-629:
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Also in {{FSNamesystem.chooseExcessReplicates()}} the following variable
{{long minSpace = Long.MAX_VALUE;}}
is never read.

> Remove ReplicationTargetChooser.java along with fixing import warnings.
> -----------------------------------------------------------------------
>
>                 Key: HDFS-629
>                 URL: https://issues.apache.org/jira/browse/HDFS-629
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0
>            Reporter: Konstantin Shvachko
>             Fix For: 0.21.0
>
>
> ReplicationTargetChooser.java is empty and should be removed.
> This is introduced by pluggable replica placement interface HDFS-385 along 
> with some import warnings in:
> BlockPlacementPolicy
> BlockPlacementPolicyDefault

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