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From Andrew Purtell <apurt...@apache.org>
Subject Re: HADOOP-3856
Date Fri, 06 Feb 2009 19:00:08 GMT
So it looks like a complete rewrite of the datanode network I/O
in the async model is necessary. I don't want to invest the time
if in the end it isn't enough to significantly affect HBase
stability in a positive way. 

Blocking in disk I/O will be out of scope.

   - Andy

> From: Andrew Purtell 
> I have started work on this. The plan is to use selectable
> channels (set to blocking mode), a work queue, and a pool of
> worker threads to handle xceiver connections.
> However, it may be necessary to go fully async


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