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https://issues.apache.org/jira/browse/HDFS-6133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhaoyunjiong updated HDFS-6133:
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Attachment: HDFS-6133-6.patch
Thanks Kai Zheng for point out the bug in TestBalancer. Fixed in new patch.
Also update the comment mentioned.
For mover, it use replaceBlock same as balancer, so mover will not able to move
blocks as well.
For torage type/policy, Kihwal Lee already answered the question:
{quote}
We will make additional changes in separate jiras to make NN aware of favored
nodes. I think the patch in this jira is fine as a stepping stone for the
further work.
{quote}
> 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, namenode
> Reporter: zhaoyunjiong
> Assignee: zhaoyunjiong
> Attachments: HDFS-6133-1.patch, HDFS-6133-2.patch, HDFS-6133-3.patch,
> HDFS-6133-4.patch, HDFS-6133-5.patch, HDFS-6133-6.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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