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https://issues.apache.org/jira/browse/HBASE-8220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13639980#comment-13639980
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cuijianwei commented on HBASE-8220:
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Thanks for your review, I update the patch to remove whitespace.
> can we record the count opened HTable for HTablePool
> ----------------------------------------------------
>
> Key: HBASE-8220
> URL: https://issues.apache.org/jira/browse/HBASE-8220
> Project: HBase
> Issue Type: Improvement
> Components: Client
> Affects Versions: 0.94.3
> Reporter: cuijianwei
> Assignee: cuijianwei
> Attachments: 8220-trunk-v1.txt, 8220-trunk-v2.txt,
> 8220-trunk-v3-reattached.txt, 8220-trunk-v3.txt, 8220-trunk-v4.txt,
> HBASE-8220-0.94.3.txt, HBASE-8220-0.94.3.txt, HBASE-8220-0.94.3.txt-v2,
> HBASE-8220-0.94.3-v2.txt, HBASE-8220-0.94.3-v3.txt, HBASE-8220-0.94.3-v4.txt,
> HBASE-8220-0.94.3-v5.txt
>
>
> In HTablePool, we have a method getCurrentPoolSize(...) to get how many
> opened HTable has been pooled. However, we don't know ConcurrentOpenedHTable
> which means the count of HTable get from HTablePool.getTable(...) and don't
> return to HTablePool by PooledTable.close(). The ConcurrentOpenedHTable may
> be meaningful because it indicates how many HTables should be opened for the
> application which may help us set the appropriate MaxSize of HTablePool.
> Therefore, we can and a ConcurrentOpenedHTable as a counter in HTablePool.
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