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Date: Fri, 17 Feb 2017 01:50:41 +0000 (UTC)
From: "Weiwei Yang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-11401) Reduce verbosity of logs with
 favored nodes and block pinning enabled
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archived-at: Fri, 17 Feb 2017 01:50:45 -0000


    [ https://issues.apache.org/jira/browse/HDFS-11401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15871037#comment-15871037 ] 

Weiwei Yang commented on HDFS-11401:
------------------------------------

Hi [~rakeshr]

Thanks for your comments, it makes sense to me. I just uploaded the patch with the change you suggested, thank you!

> Reduce verbosity of logs with favored nodes and block pinning enabled
> ---------------------------------------------------------------------
>
>                 Key: HDFS-11401
>                 URL: https://issues.apache.org/jira/browse/HDFS-11401
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer & mover, datanode
>    Affects Versions: 2.8.0
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Weiwei Yang
>            Priority: Minor
>         Attachments: HDFS-11401.01.patch, HDFS-11401.02.patch, HDFS-11401.03.patch, testBalancerWithPinnedBlocks.output.txt
>
>
> I am working on enabling favored nodes for HBase (HBASE-15531). Was trying out what happens if favored nodes is used and HDFS balancer is enabled. Ran the unit test TestBalancer#testBalancerWithPinnedBlocks from branch-2.8.  There were too many exceptions and error messages with this (output attached) since pinned blocks can't be moved.
> Is there any way to reduce this logging since block pinning is intentional? On a real cluster, this could be too much. HDFS-6133 enabled block pinning.


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