[HDFS-5175] Provide clients a way to set IP header bits on connections

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.5-alpha
• Assignee: Unassigned
• Reporter: Lohit Vijaya Renu
• Created: 09/Sep/13 19:10
• Updated: 14/Oct/15 23:25

Description

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.