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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-941) Datanode xceiver protocol should allow reuse of a connection
Date Tue, 02 Feb 2010 22:02:19 GMT
Datanode xceiver protocol should allow reuse of a connection
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                 Key: HDFS-941
                 URL: https://issues.apache.org/jira/browse/HDFS-941
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: data-node, hdfs client
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon


Right now each connection into the datanode xceiver only processes one operation.

In the case that an operation leaves the stream in a well-defined state (eg a client reads
to the end of a block successfully) the same connection could be reused for a second operation.
This should improve random read performance significantly.

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