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From "Thiruvel Thirumoolan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11401) Reduce verbosity of logs with favored nodes and block pinning enabled
Date Thu, 09 Feb 2017 19:16:41 GMT
Thiruvel Thirumoolan created HDFS-11401:
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             Summary: 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
            Priority: Minor


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.



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