lhotari opened a new pull request #10572:
URL: https://github.com/apache/pulsar/pull/10572


   ### Motivation
   
   BacklogQuotaManagerTest is flaky.
   
   ### Modifications
   
   - use Awaitility for checking PersistentTopicInternalStats in a few test 
methods
   - disable batching in all producers
   - cleanup test by using the TIME_TO_CHECK_BACKLOG_QUOTA constant
   - speed up test by reducing TIME_TO_CHECK_BACKLOG_QUOTA from 5 seconds to 3 
seconds
   - fix race condition in testConsumerBacklogEvictionWithAckTimeQuota which 
was causing flakiness
     - resolve the race by pausing for 1 second after acknowledging 10 messages 
for the 1. consumer. This makes the ledgers to expire at different times so 
that the last ledger with 4 messages will expire later than others.


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