Remove dns.interface configuration options
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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 user.
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