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HBase, mail # dev - Shared ThreadPoolExecutor in HTable by default.


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Elliott Clark 2013-04-02, 22:44
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Re: Shared ThreadPoolExecutor in HTable by default.
lars hofhansl 2013-04-03, 01:16
I think it'd make it hard to size the pool correctly.
There is a proposed patch here: https://issues.apache.org/jira/browse/HBASE-6580 where we'd tie the threadpool to an HConnection, I think that would be the correct going forward.

-- Lars

________________________________
 From: Elliott Clark <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Sent: Tuesday, April 2, 2013 3:44 PM
Subject: Shared ThreadPoolExecutor in HTable by default.
 
Is there any reason that the ThreadPoolExecutor used in HTable[1] couldn't
be a singleton. That would mean that by default htables share threads (as I
would argue is correct), but still give advanced users the ability to
override this using the  more explicit[2] constructor.
   1.
  https://github.com/apache/hbase/blob/trunk/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java#L183
   2.
  https://github.com/apache/hbase/blob/trunk/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java#L202

Thanks
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Elliott Clark 2013-04-03, 04:28
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Bijieshan 2013-04-03, 01:15