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https://issues.apache.org/jira/browse/CASSANDRA-16079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17249365#comment-17249365
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Paulo Motta commented on CASSANDRA-16079:
-----------------------------------------
bq. I like the idea. But i haven't been able to implement it so far.
Don't bother changing unless it's straightforward.
bq. investigating/validating dtest failures in those last CI runs…
It could be the too low ring delay. I've [increased
it|https://github.com/pauloricardomg/ccm/commit/1346c2ebdaaf1655366eac3b9f47839563ed987c]
to 10s here and resubmitted CI:
* [with 13701|https://ci-cassandra.apache.org/job/Cassandra-devbranch/262/]
* [without|https://ci-cassandra.apache.org/job/Cassandra-devbranch/260/]
> Improve dtest runtime
> ---------------------
>
> Key: CASSANDRA-16079
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16079
> Project: Cassandra
> Issue Type: Improvement
> Components: CI
> Reporter: Adam Holmberg
> Assignee: Michael Semb Wever
> Priority: Normal
> Fix For: 4.0-beta
>
> Attachments: Screenshot 2020-09-19 at 12.32.21.png
>
>
> A recent ticket, CASSANDRA-13701, changed the way dtests run, resulting in a
> [30% increase in run
> time|https://www.mail-archive.com/[email protected]/msg15606.html].
> While that change was accepted, we wanted to spin out a ticket to optimize
> dtests in an attempt to gain back some of that runtime.
> At this time we don't have concrete improvements in mind, so the first order
> of this ticket will be to analyze the state of things currently, and try to
> ascertain some valuable optimizations. Once the problems are understood, we
> will break down subtasks to divide the work.
> Some areas to consider:
> * cluster reuse
> * C* startup optimizations
> * Tests that should be ported to in-JVM dtest or even unit tests
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