Marton Greber has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/23215 )

Change subject: [net] use AF_INET hint for GetFQDN()
......................................................................

[net] use AF_INET hint for GetFQDN()

I noticed that on nodes with not properly configured IPv6 DNS resolver,
GetFQDN() would take quite a long time (~5 seconds) even if it
eventually returns the name.  This patch addresses the issue, adding
the AF_INET hint for 'ai_family' when invoking getaddrinfo().  Doing so
is in sync with the set of hints provided for the invocation of
getaddrinfo() in the context of HostPort::ResolveAddresses().

Change-Id: Ibca0a3c1f7ad03a6f847057c38c00b42275dec8b
Reviewed-on: http://gerrit.cloudera.org:8080/23213
Tested-by: Alexey Serbin <[email protected]>
Reviewed-by: Gabriella Lotz <[email protected]>
Reviewed-by: Ashwani Raina <[email protected]>
Reviewed-by: Abhishek Chennaka <[email protected]>
(cherry picked from commit 9c703fa5bd476c17441361de68a518847d23e001)
Reviewed-on: http://gerrit.cloudera.org:8080/23215
Reviewed-by: Marton Greber <[email protected]>
Tested-by: Marton Greber <[email protected]>
---
M src/kudu/util/net/net_util.cc
1 file changed, 1 insertion(+), 0 deletions(-)

Approvals:
  Gabriella Lotz: Looks good to me, but someone else must approve
  Marton Greber: Looks good to me, approved; Verified

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Gerrit-Project: kudu
Gerrit-Branch: branch-1.18.x
Gerrit-MessageType: merged
Gerrit-Change-Id: Ibca0a3c1f7ad03a6f847057c38c00b42275dec8b
Gerrit-Change-Number: 23215
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Abhishek Chennaka <[email protected]>
Gerrit-Reviewer: Ashwani Raina <[email protected]>
Gerrit-Reviewer: Gabriella Lotz <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Marton Greber <[email protected]>

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