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https://issues.apache.org/jira/browse/HDFS-5175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14183233#comment-14183233
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Chris Nauroth commented on HDFS-5175:
-------------------------------------
Yes, you're right. I mistakenly looked at the old httpclient dependency that
we're going to remove.
Then, if I understand correctly, we have this dependency now...
{code}
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<scope>compile</scope>
</dependency>
{code}
...and in addition, you're proposing that we add this dependency:
{code}
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcomponents-client</artifactId>
<scope>compile</scope>
</dependency>
{code}
Do I have it correct now?
It's possible I'm exaggerating the impact of adding this dependency, so it
would be great to get more opinions. An email to hdfs-dev would be a good way
to call attention to it.
> 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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