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.
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 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 constructor.