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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6133) Add a feature for replica pinning so that a pinned replica will not be moved by Balancer/Mover.
Date Wed, 02 Mar 2016 20:05:18 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yongjun Zhang updated HDFS-6133:
--------------------------------
    Release Note: Add a feature for replica pinning so that when a replica is pinned in a
datanode, it will not be moved by Balancer/Mover. The replica pinning feature can be enabled/disabled
by "dfs.datanode.block-pinning.enabled", where the default is false.

> Add a feature for replica pinning so that a pinned replica will not be moved by Balancer/Mover.
> -----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6133
>                 URL: https://issues.apache.org/jira/browse/HDFS-6133
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer & mover, datanode
>            Reporter: zhaoyunjiong
>            Assignee: zhaoyunjiong
>             Fix For: 2.7.0
>
>         Attachments: HDFS-6133-1.patch, HDFS-6133-10.patch, HDFS-6133-11.patch, HDFS-6133-2.patch,
HDFS-6133-3.patch, HDFS-6133-4.patch, HDFS-6133-5.patch, HDFS-6133-6.patch, HDFS-6133-7.patch,
HDFS-6133-8.patch, HDFS-6133-9.patch, HDFS-6133.patch
>
>
> Currently, run Balancer will destroying Regionserver's data locality.
> If getBlocks could exclude blocks belongs to files which have specific path prefix, like
"/hbase", then we can run Balancer without destroying Regionserver's data locality.



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