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https://issues.apache.org/jira/browse/KUDU-2937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Serbin updated KUDU-2937:
--------------------------------
Labels: clock ntp (was: )
> built-in NTP client: implement 'iburst'
> ---------------------------------------
>
> Key: KUDU-2937
> URL: https://issues.apache.org/jira/browse/KUDU-2937
> Project: Kudu
> Issue Type: Sub-task
> Reporter: Alexey Serbin
> Priority: Major
> Labels: clock, ntp
>
> For fast initial synchronisation with NTP sources it's necessary to implement
> iburst-like behavior.
> From [RFC5905|https://tools.ietf.org/html/rfc5905] :
> {noformat}
> If the BURST flag is lit and the server is reachable and a valid
> source of synchronization is available, the client sends a burst of
> BCOUNT (8) packets at each poll interval. The interval between
> packets in the burst is two seconds. This is useful to accurately
> measure jitter with long poll intervals. If the IBURST flag is lit
> and this is the first packet sent when the server has been
> unreachable, the client sends a burst. This is useful to quickly
> reduce the synchronization distance below the distance threshold and
> synchronize the clock.
> {noformat}
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