[
https://issues.apache.org/jira/browse/HDFS-12827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Suri babu Nuthalapati updated HDFS-12827:
-----------------------------------------
Summary: Need Clarity on Replica Placement: The First Baby Steps in HDFS
Architecture documentation (was: Need Clarity onReplica Placement: The First
Baby Steps in HDFS Architecture documentation)
> Need Clarity on Replica Placement: The First Baby Steps in HDFS Architecture
> documentation
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-12827
> URL: https://issues.apache.org/jira/browse/HDFS-12827
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Reporter: Suri babu Nuthalapati
> Priority: Minor
>
> The placement should be this:
> https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html
> 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.
> Hadoop Definitive guide says the same and I have tested and saw the same
> behavior as above.
> ############
> But the documentation in the versions after r2.5.2 it was mentioned as:
> http://hadoop.apache.org/docs/r2.5.2/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html
> HDFS’s placement policy is to put one replica on one node in the local rack,
> another on a different node in the local rack, and the last on a different
> node in a different rack.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
