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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11401) Reduce verbosity of logs with favored nodes and block pinning enabled
Date Fri, 17 Feb 2017 08:45:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15871446#comment-15871446

Weiwei Yang commented on HDFS-11401:

v4 patch uploaded, updated according to [~rakeshr]'s comments, UT failure is not related.
[~surendrasingh] and [~rakeshr], please let me know if it looks good now, thanks.

> 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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