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Posted to common-dev@hadoop.apache.org by "Todd Lipcon (Created) (JIRA)" <ji...@apache.org> on 2012/02/14 06:36:59 UTC

[jira] [Created] (HADOOP-8071) Avoid an extra packet in client code when nagling is disabled

Avoid an extra packet in client code when nagling is disabled
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                 Key: HADOOP-8071
                 URL: https://issues.apache.org/jira/browse/HADOOP-8071
             Project: Hadoop Common
          Issue Type: Improvement
          Components: ipc
    Affects Versions: 0.23.1
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Minor


Currently, if you disable TCP_NODELAY in the IPC client, you get an extra packet for each call which contains the call's length. This is unnecessary. Instead, we can just reserve the 4 bytes in the buffer up front, then go back to fill it in before pushing the call to the wire.

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