adoroszlai commented on PR #3376:
URL: https://github.com/apache/ozone/pull/3376#issuecomment-1118220046

   @ChenSammi `TestOzoneManagerPrepare` was flaky before (HDDS-5990), but it is 
definitely much worse now than previously.
   
   Seems like stop/start logic is not entirely fail-safe, or test needs 
additional/adjusted `waitFor` checks?
   
   ```
   2022-05-05 01:41:52,188 [pool-2338-thread-1] ERROR om.OzoneManager 
(ExitUtils.java:terminate(133)) - Terminating with exit status 1: Failed to 
start RPC Server.
   java.net.BindException: Problem binding to [localhost:41487] 
java.net.BindException: Address already in use
     ...
     at 
org.apache.hadoop.ozone.om.OzoneManager.startRpcServer(OzoneManager.java:1084)
     at 
org.apache.hadoop.ozone.om.OzoneManager.getRpcServer(OzoneManager.java:1054)
     at 
org.apache.hadoop.ozone.om.OzoneManager.installCheckpoint(OzoneManager.java:3366)
     at 
org.apache.hadoop.ozone.om.OzoneManager.installCheckpoint(OzoneManager.java:3254)
     at 
org.apache.hadoop.ozone.om.OzoneManager.installSnapshotFromLeader(OzoneManager.java:3231)
   ```
   
   
https://github.com/adoroszlai/ozone-build-results/tree/master/2022/05/05/14826/it-flaky/hadoop-ozone/integration-test


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