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https://issues.apache.org/jira/browse/HDFS-2547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J reopened HDFS-2547:
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> Design doc is wrong about default block placement policy.
> ---------------------------------------------------------
>
> Key: HDFS-2547
> URL: https://issues.apache.org/jira/browse/HDFS-2547
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.20.1
> Reporter: Harsh J
> Assignee: Harsh J
> Priority: Trivial
> Fix For: 0.24.0
>
> Attachments: HDFS-2547.patch
>
>
> bq. For the common case, when the replication factor is three, HDFS's
> placement policy is to put one replica on one node in the local rack, another
> on a node in a different (remote) rack, and the last on a different node in
> the same *remote* rack.
> Should actually be: "and the last on a different node in the same *local*
> rack."
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