Lohit Vijayarenu created HDFS-5175:
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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 setTrafficClass
Opening this JIRA to get more inputs from others who have had experience and
might have already thought about this.
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