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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-6133) Add a feature for replica pinning so that a pinned replica will not be moved by Balancer/Mover.
Date Fri, 26 Feb 2016 01:10:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15168227#comment-15168227
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Yongjun Zhang edited comment on HDFS-6133 at 2/26/16 1:09 AM:
--------------------------------------------------------------

Hi [~zhaoyunjiong],

I found the release notes

{quote}
The replica pinning feature can be enabled/disabled by "dfs.datanode.block-pinning.enabled",
where the default is false.
{quote}

 is not accurate about the config property name, I'm changing it to:

{quote}
The replica pinning feature can be enabled/disabled by client config property "dfs.client.pin-on-favored-node.enabled"
whose default is false
{quote}

Thanks.



was (Author: yzhangal):
Hi [~zhaoyunjiong],

I found the release notes is not accurate about the config property name, I'm changing it
to:

{quote}
The replica pinning feature can be enabled/disabled by client config property "dfs.client.pin-on-favored-node.enabled"
whose default is false
{quote}

Thanks.


> 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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