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https://issues.apache.org/jira/browse/HBASE-14478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908638#comment-14908638
 ] 

Hudson commented on HBASE-14478:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6842 (See 
[https://builds.apache.org/job/HBase-TRUNK/6842/])
HBASE-14478 - A ThreadPoolExecutor with a LinkedBlockingQueue cannot 
(ramkrishna: rev bdea8b891f33646793238a5a136229292aa55df5)
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/snapshot/RegionServerSnapshotManager.java


> A ThreadPoolExecutor with a LinkedBlockingQueue cannot execute tasks 
> concurrently
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-14478
>                 URL: https://issues.apache.org/jira/browse/HBASE-14478
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 2.0.0
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14478.patch
>
>
> In FlushTableSubprocedurePool and SnapshotSubprocedurePool, the 
> ThreadPoolExecutor with a LinkedBlockingQueue is used, and it's corePoolSize 
> and maximumPoolSize are not the same, which can cause the if the number of 
> tasks is larger than corePoolSize, those tasks cannot be executed until old 
> tasks are finished and the number of running tasks is less than corePoolSize. 
> We should use the same value for the corePoolSize and maximumPoolSize if the 
> LinkedBlockingQueue is used.



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