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https://issues.apache.org/jira/browse/CASSANDRA-16595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17322272#comment-17322272
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Michael Semb Wever edited comment on CASSANDRA-16595 at 4/15/21, 4:13 PM:
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Fix is 
https://github.com/apache/cassandra/compare/trunk...thelastpickle:mck/16595-fix/trunk

 
[!https://ci-cassandra.apache.org/job/Cassandra-devbranch/665/badge/icon!|https://ci-cassandra.apache.org/blue/organizations/jenkins/Cassandra-devbranch/detail/Cassandra-devbranch/665/pipeline/]

circleci: 
https://app.circleci.com/pipelines/github/michaelsembwever/cassandra?branch=mck%2F16595-fix%2Ftrunk


was (Author: michaelsembwever):
Fix is 
https://github.com/apache/cassandra/compare/trunk...thelastpickle:mck/16595-fix/trunk

 
[!https://ci-cassandra.apache.org/job/Cassandra-devbranch/664/badge/icon!|https://ci-cassandra.apache.org/blue/organizations/jenkins/Cassandra-devbranch/detail/Cassandra-devbranch/664/pipeline/]

circleci: 
https://app.circleci.com/pipelines/github/michaelsembwever/cassandra?branch=mck%2F16595-fix%2Ftrunk

> Remove test parallelism from ant build.xml in all branches
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-16595
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16595
>             Project: Cassandra
>          Issue Type: Task
>          Components: Test/unit
>            Reporter: Michael Semb Wever
>            Assignee: Michael Semb Wever
>            Priority: Normal
>             Fix For: 2.2.20, 3.0.25, 3.11.11, 4.0-rc1, 4.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Cassandra's build.xml supports parallel test runners. This functionality is 
> available through {{`-Dtest.runners`}} and the {{`testparallel`}} ant macro.
> Having not been actively used and atrophied over time, it breaks a number of 
> tests. The distributed in-jvm tests don't work at all with parallel runners 
> (currently they need `-Dtest.runners=1` specified to work). And there are 
> plenty of flakies, from where
> tests use fixed ports (StorageServiceServerTest), to byteman (eg 
> BMUnitRunner), and around conf files on disk.
> This was raised on the dev ML, where the consensus was to remove it: 
> https://lists.apache.org/thread.html/r1ca3c72b90fa6c57c1cb7dcd02a44221dcca991fe7392abd8c29fe95%40%3Cdev.cassandra.apache.org%3E
> The idea is to then replace ant test parallelism with docker container 
> parallelism.



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