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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-986) Cache sockets in DFSClient
Date Fri, 07 Nov 2008 05:44:44 GMT
Cache sockets in DFSClient
--------------------------

                 Key: HBASE-986
                 URL: https://issues.apache.org/jira/browse/HBASE-986
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: stack
            Priority: Blocker
             Fix For: 0.19.0


Talking with Dhruba here at Apachecon, he suggested that setup of sockets is big price payed
during random-read.  Stefan hacked into DFSClient an ugly patch that would allow us quickly
test random-reading on top of a cache of cached sockets.  I just tested it.  I see 4X improvement.

Making this a blocker on 0.19.0.  Looks like we can hack in a real socket pool using a custom
SocketFactory under DFSClient.  It'll be messy but the promised improvement is big.

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