showuon opened a new pull request #8894:
URL: https://github.com/apache/kafka/pull/8894


   The test MirrorConnectorsIntegrationTest.testReplication failed too often 
recently. It failed on the build at least 6 times (I didn't check all failed 
builds) in today's(6/18) trunk build, and also failed my PR testing! I think it 
should be fixed soon to save developer's time. 
   
   The test is to test MM2 replication. And recently, it failed all because the 
Records were not replicated to primary/backup cluster yet, so that the consumer 
cannot retrieve the records in time.  In this PR, I add retries to these 
consumer.poll, to have 3 retries to poll the records, and keep the original. It 
should make the tests more stable.
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   


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