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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15976) RegionServerMetricsWrapperRunnable will be failure when disable blockcache.
Date Wed, 29 Jun 2016 09:46:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15354892#comment-15354892
] 

Jingcheng Du commented on HBASE-15976:
--------------------------------------

The issues in findbugs and unit tests seem not related with this patch.
Pushed to all 0.98+ branches. Thank you all for reviews.

And, so sorry for using a wrong message when committing patch to branch 0.98.
I wrongly added " - Addendum" to the commit message. I've reverted this commit and pushed
the patch again with a correct message.

> RegionServerMetricsWrapperRunnable will be failure  when disable blockcache.
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-15976
>                 URL: https://issues.apache.org/jira/browse/HBASE-15976
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.15, 1.2.1, 1.0.3, 1.1.5
>            Reporter: Liu Junhong
>            Assignee: Jingcheng Du
>         Attachments: HBASE-15976-0.98-v2.patch, HBASE-15976-0.98.patch, HBASE-15976-branch-1&branch-1.3.patch,
HBASE-15976-branch-1-addendum.patch, HBASE-15976-branch-1.0.patch, HBASE-15976-branch-1.1.patch,
HBASE-15976-branch-1.2-v2.patch, HBASE-15976-branch-1.2.patch, HBASE-15976-branch-1.3-v2.patch,
HBASE-15976-master-addendum.patch, HBASE-15976-master.patch
>
>
> When i disable blockcache, the code "cacheStats = blockCache.getStats();" will occur
NPE in org.apache.hadoop.hbase.regionserver.MetricsRegionServerWrapperImpl.RegionServerMetricsWrapperRunnable.
> It lead to many regionserver's metrics' value always equal 0.



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