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https://issues.apache.org/jira/browse/HDFS-6133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317251#comment-14317251
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Ted Yu commented on HDFS-6133:
------------------------------
In DFSOutputStream.java:
{code}
1452 (targetPinnings == null ? false : targetPinnings[0]),
targetPinnings);
{code}
Looks like the boolean parameter, pinning, is unnecessary: when targetPinnings
is not null, pinning would be true. Otherwise pinning is false.
> Make Balancer support exclude specified path
> --------------------------------------------
>
> Key: HDFS-6133
> URL: https://issues.apache.org/jira/browse/HDFS-6133
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover, datanode
> Reporter: zhaoyunjiong
> Assignee: zhaoyunjiong
> Fix For: 2.7.0
>
> Attachments: HDFS-6133-1.patch, HDFS-6133-10.patch,
> HDFS-6133-11.patch, HDFS-6133-2.patch, HDFS-6133-3.patch, HDFS-6133-4.patch,
> HDFS-6133-5.patch, HDFS-6133-6.patch, HDFS-6133-7.patch, HDFS-6133-8.patch,
> HDFS-6133-9.patch, HDFS-6133.patch
>
>
> Currently, run Balancer will destroying Regionserver's data locality.
> If getBlocks could exclude blocks belongs to files which have specific path
> prefix, like "/hbase", then we can run Balancer without destroying
> Regionserver's data locality.
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