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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5587) Remove dns.interface configuration options
Date Fri, 16 Mar 2012 00:32:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230765#comment-13230765

stack commented on HBASE-5587:

I think this feature was mentioned once inside my earshot that I remember.  I doubt it a widely
used feature if its used at all.

Do others have an opinion on this?
> Remove dns.interface configuration options 
> -------------------------------------------
>                 Key: HBASE-5587
>                 URL: https://issues.apache.org/jira/browse/HBASE-5587
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Eli Collins
> Are the {{hbase.*.dns.interface}} configuration options used or needed?  Per HBASE-4109
it looks like these never really worked, at least in cases where the hostname with a trailing
dot doesn't resolve. The reason I asked is that while these were introduced in Hadoop, I don't
think they're actually used, nor am I convinced bypassing the host for DNS lookups is a good
idea (leads to painful bugs where default Java DNS lookups differ with these lookups). HBase
started using these via a similar feature in HBASE-1279 and HBASE-1279.
> I filed HADOOP-8156 to remove the API which HBase uses, which is obviously an incompatible
change and would need to be worked around here if you wanted to keep this functionality in
HBase, ie *if* that were to get checked into Hadoop we'd first need to get you on your own
DNS class. Either way I'll update DNS' InterfaceAudience annotation to indicate HBase is a

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