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There is a special "deflake" action on GitHub that allows us to run a single integration test repeatedly. Currently, it only supports tests written using the ClusterTestExtensions (i.e., @ClusterTest , @ClusterTests , and @ClusterTemplate ). It combines Gradle test selectors "--tests" with a custom property added in KAFKA-17433. See the Gradle docs on test filtering for valid patterns https://docs.gradle.org/current/userguide/java_testing.html#simple_name_pattern.
The deflake action is located https://github.com/apache/kafka/actions/workflows/deflake.yml
The Action is limited to 60 minutes of execution time, so take care not to run too many tests or use too many repetitions. Committers using this action can push their branch to apache/kafka in order to see a Gradle Build Scan of the job.
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