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https://issues.apache.org/jira/browse/HDFS-7891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14500165#comment-14500165
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Zhe Zhang commented on HDFS-7891:
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Thanks Walter for the work and Nicholas for the final review!
> A block placement policy with best rack failure tolerance
> ---------------------------------------------------------
>
> Key: HDFS-7891
> URL: https://issues.apache.org/jira/browse/HDFS-7891
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: namenode
> Reporter: Walter Su
> Assignee: Walter Su
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: HDFS-7891.005.dup.patch, HDFS-7891.005.patch,
> HDFS-7891.006.patch
>
>
> a block placement policy tries its best to place replicas to most racks.
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