Enable TCP_NODELAY by default for IPC
-------------------------------------
Key: HADOOP-8069
URL: https://issues.apache.org/jira/browse/HADOOP-8069
Project: Hadoop Common
Issue Type: Improvement
Components: ipc
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
I think we should switch the default for the IPC client and server NODELAY
options to true. As wikipedia says:
{quote}
In general, since Nagle's algorithm is only a defense against careless
applications, it will not benefit a carefully written application that takes
proper care of buffering; the algorithm has either no effect, or negative
effect on the application.
{quote}
Since our IPC layer is well contained and does its own buffering, we shouldn't
be careless.
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