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From "Ashish Singhi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15976) RegionServerMetricsWrapperRunnable will be failure when disable blockcache.
Date Tue, 07 Jun 2016 07:21:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15318023#comment-15318023
] 

Ashish Singhi commented on HBASE-15976:
---------------------------------------

+1

> 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
>            Reporter: Liu Junhong
>            Assignee: Jingcheng Du
>         Attachments: HBASE-15976-0.98.patch, HBASE-15976-branch-1&branch-1.3.patch,
HBASE-15976-branch-1.0.patch, HBASE-15976-branch-1.1.patch, HBASE-15976-branch-1.2.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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