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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9810) Allow support for more than one block replica per datanode
Date Tue, 16 Feb 2016 20:15:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15149232#comment-15149232
] 

Zhe Zhang commented on HDFS-9810:
---------------------------------

[~chris.douglas] / [~virajith] I had a similar confusion when seeing this JIRA come up. Then
I realized it's part of the HDFS-9806 work. 

Given the scope of HDFS-9806 it will most likely need a feature branch. To couple with that,
maybe we should make HDFS-9806 an umbrella JIRA and convert this series of JIRAs as subtasks?

> Allow support for more than one block replica per datanode
> ----------------------------------------------------------
>
>                 Key: HDFS-9810
>                 URL: https://issues.apache.org/jira/browse/HDFS-9810
>             Project: Hadoop HDFS
>          Issue Type: Task
>          Components: datanode
>            Reporter: Virajith Jalaparti
>
> Datanodes report and store only one replica of each block. It should be possible to store
multiple replicas among its different configured storage types, particularly to support non-durable
media and remote storage.



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