symat opened a new pull request #1274: ZOOKEEPER-3740: fix flaky PurgeTxnTest.testPurgeWhenLogRollingInProgress URL: https://github.com/apache/zookeeper/pull/1274 This test is always passing for me when I execute only the PurgeTxnTest test class locally, but when I execute all the tests (with multiple parallel threads, using `mvn clean install`), then it always fails. It is failing frequently on the `zookeeper-master-maven` Jenkins job as well. The test starts three threads, performing 1000 ZNode creation in each thread and timeouts if the threads are not finished in 90 seconds. Currently it is not easy to tell based on the logs if the timeout happens because the operations are still in progress or if one of the threads terminated due to an unexpected exception. In this patch I: - increased the timeout from 90 to 120 seconds - added an extra logic to actually fail because of the Exception on the threads, if any happen during the execution - I decreased the number of ZNode creations to 750 (from the original 1000) Applying this patch locally fixed my issues, I hope it will be enough to fix the test on Jenkins as well.
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