Design doc is wrong about default block placement policy.
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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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