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https://issues.apache.org/jira/browse/HBASE-14478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907464#comment-14907464
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ramkrishna.s.vasudevan commented on HBASE-14478:
------------------------------------------------
+1.
> 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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