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https://issues.apache.org/jira/browse/HADOOP-6311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13477471#comment-13477471
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Colin Patrick McCabe commented on HADOOP-6311:
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With regard to security: after further reflection, I think we will need to ask
system administrators establish secure directories to hold the UNIX domain
sockets. In practice, this means a directory owned by hdfs, where neither it
nor any of its parent directories are vulnerable to attack.
bq. ... my question is more this: let's assume that unix sockets for the data
path are 3x as fast as local TCP sockets. If that's the case, then do we still
get a big benefit from short-circuit?
Oh, I misinterpreted. You were talking about using UNIX domain instead of TCP
for data traffic. Yeah, it could be interesting. It's a time-honored way to
get better performance on UNIXes. I'll do some tests if I can get the UNIX
domain sockets to implement the "standard" interface (and if the resulting
combination actually works.) I think there is a good chance that it will...
> Add support for unix domain sockets to JNI libs
> -----------------------------------------------
>
> Key: HADOOP-6311
> URL: https://issues.apache.org/jira/browse/HADOOP-6311
> Project: Hadoop Common
> Issue Type: New Feature
> Components: native
> Affects Versions: 0.20.0
> Reporter: Todd Lipcon
> Assignee: Colin Patrick McCabe
> Attachments: 6311-trunk-inprogress.txt, design.txt,
> HADOOP-6311.014.patch, HADOOP-6311.016.patch, HADOOP-6311.018.patch,
> HADOOP-6311.020b.patch, HADOOP-6311.020.patch, HADOOP-6311.021.patch,
> HADOOP-6311.022.patch, HADOOP-6311-0.patch, HADOOP-6311-1.patch,
> hadoop-6311.txt
>
>
> For HDFS-347 we need to use unix domain sockets. This JIRA is to include a
> library in common which adds a o.a.h.net.unix package based on the code from
> Android (apache 2 license)
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