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https://issues.apache.org/jira/browse/MAPREDUCE-4168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14260945#comment-14260945
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Avner BenHanoch commented on MAPREDUCE-4168:
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Karthik - I only need hadoop to talk on my *secondary* interface and not on all
interfaces.
Still, when I tested hadoop/yarn and configured slaves file that defines my
cluster (and also enabled passwordless ssh), I noticed that a major part of the
traffic goes over the main interface and not over the secondary interface that
I defined in the slaves file.
I once tracked it in the code and saw that Hadoop did reverse DNS lookup for
the IP that I configured in the slaves file and got the hostname of the peer
machine. Then it communicated with that machine based on the hostname that it
resolved; hence, traffic went over the main interface instead of my secondary
interface.
> Support multiple network interfaces
> -----------------------------------
>
> Key: MAPREDUCE-4168
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4168
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Tom White
>
> Umbrella jira to track the MapReduce side of HADOOP-8198.
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