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Andres de la Peña commented on CASSANDRA-17043:
-----------------------------------------------
Mentioning parallelism to the wiki page is a great idea, in the end that's
something that can be tuned depending on the particular test that is be run.
The process to edit the config is quite manual and having 12 different versions
of the config file it's quite likely that I have made a mistake, so I'd thank
you if you take a look at them :)
> CircleCI dtest multiplexer with MIDRES needs more resources
> -----------------------------------------------------------
>
> Key: CASSANDRA-17043
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17043
> Project: Cassandra
> Issue Type: Task
> Components: CI
> Reporter: Andres de la Peña
> Assignee: Andres de la Peña
> Priority: Low
> Fix For: 3.0.x, 3.11.x, 4.0.x, 4.x
>
>
> The CircleCI jobs for regular dtests jobs have more resources in MIDRES,
> which is necessary for some dtests to reliably success. However, the dtest
> multiplexer uses the same resources for LOWRES and MIDRES.
> I think that the dtest multiplexer should always use the same resources as
> the regular dtests. Using too small resources in the multiplexer can lead to
> failures that don't reproduce in the regular dtest jobs, like the one we
> found in
> [CASSANDRA-16334|https://app.circleci.com/pipelines/github/adelapena/cassandra/1020/workflows/63908694-e4d7-40b1-9418-7a4b87826233/jobs/9422]
> when trying to repeatedly run a resource-hungry dtest, or like [this other
> one|https://app.circleci.com/pipelines/github/adelapena/cassandra/1020/workflows/63908694-e4d7-40b1-9418-7a4b87826233/jobs/9422]
> while running {{test_network_topology}}.
> This happens because I forgot to update the diff patch when adding the
> multiplexer. This doesn't affect HIGHRES because in that case the patch
> changes the configuration of the test executor, while in MIDRES a new
> executor is defined.
>
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