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https://issues.apache.org/jira/browse/CASSANDRA-11569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15286184#comment-15286184
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stone commented on CASSANDRA-11569:
-----------------------------------
Have made test on this patch?
Actually I have 2 DataCenter,client is in DC1,
when there is no latency between DC2 and DC1.
and I set 10 ms/100ms latency,there is no change about the value of
CrossNodeLatency
> Track message latency across DCs
> --------------------------------
>
> Key: CASSANDRA-11569
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11569
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability
> Reporter: Chris Lohfink
> Assignee: Chris Lohfink
> Priority: Minor
> Attachments: CASSANDRA-11569.patch
>
>
> Since we have the timestamp a message is created and when arrives, we can get
> an approximate time it took relatively easy and would remove necessity for
> more complex hacks to determine latency between DCs.
> Although is not going to be very meaningful when ntp is not setup, it is
> pretty common to have NTP setup and even with clock drift nothing is really
> hurt except the metric becoming whacky.
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