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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-312) Connections should not be cached
Date Wed, 21 Jun 2006 18:55:31 GMT
Connections should not be cached 

         Key: HADOOP-312
         URL: http://issues.apache.org/jira/browse/HADOOP-312
     Project: Hadoop
        Type: Improvement

  Components: ipc  
    Versions: 0.4.0    
    Reporter: Devaraj Das

Servers and clients (client include datanodes, tasktrackers, DFSClients & tasks) should
not cache connections or maybe cache them for very short periods of time. Clients should set
up & tear down connections to the servers everytime they need to contact the servers (including
the heartbeats). If connection is cached, then reuse the existing connection for a few subsequent
transactions until the connection expires. The heartbeat interval should be more so that many
more clients (order of  tens of thousands) can be accomodated within 1 heartbeat interval.

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