Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/15070 )

Change subject: [clock] auto-config of built-in NTP client in cloud
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/15070/1/src/kudu/clock/builtin_ntp.cc
File src/kudu/clock/builtin_ntp.cc:

http://gerrit.cloudera.org:8080/#/c/15070/1/src/kudu/clock/builtin_ntp.cc@593
PS1, Line 593:       
RETURN_NOT_OK_PREPEND(HostPort::ParseStrings(FLAGS_builtin_ntp_servers,
             :                                                    
kStandardNtpPort, &hps),
             :                             "could not parse 
--builtin_ntp_servers flag");
> Do you think we should also use these servers in addition to the cloud-prov
I'm not sure these are needed by default if using the NTP server provided by 
the cloud infrastructure itself, because these
  * might be blocked by firewall
  * might be too far in terms of RTT and thus wouldn't constitute a set of 
good-enough candidates for time synchronization

Maybe, we should add a flag to add those if really needed?  Not sure what might 
be a use-case that justifies for adding those in addition to the NTP server 
provided from within a cloud instance.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0590c0b731a4da2f968e720dea0410d46ab62beb
Gerrit-Change-Number: 15070
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Grant Henke <granthe...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Tue, 21 Jan 2020 20:42:16 +0000
Gerrit-HasComments: Yes

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