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https://issues.apache.org/jira/browse/HBASE-8220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619919#comment-13619919
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Jean-Marc Spaggiari commented on HBASE-8220:
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Tests are failing with NP on line 284:
{code}
concurrentUsedTableCounts.get(table).decrementAndGet();
{code}
Have you tried your patch locally? Is it working for you?
> 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
> Attachments: 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
>
>
> 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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