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From "Lohit Vijayarenu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5175) Provide clients a way to set IP header bits on connections
Date Mon, 09 Sep 2013 19:10:54 GMT
Lohit Vijayarenu created HDFS-5175:

             Summary: Provide clients a way to set IP header bits on connections
                 Key: HDFS-5175
                 URL: https://issues.apache.org/jira/browse/HDFS-5175
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.5-alpha
            Reporter: Lohit Vijayarenu

It would be very helpful if we had ability for clients to set IP headers when they make socket
connections for data transfers. We were looking into setting up QoS using DSCP bit and saw
that there is no easy way to let clients pass down a specific value when clients make connection
to DataNode.

As a quick fix we did something similar to io.file.buffer.size where client could pass down
DSCP integer value and when DFSClient opens a stream, it could set the value on socket using

Opening this JIRA to get more inputs from others who have had experience and might have already
thought about this. 

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