Abacn commented on PR #25886:
URL: https://github.com/apache/beam/pull/25886#issuecomment-1477833593

   > There are two things with Apache Qpid connector, we can't use static 
topic. The workaround was to use dynamic topic and give a function that returns 
always the same value. Also, with the same connector, we found out that the 
number of ports opened is around 5k (18 workers * 300) which consume the 
majority of the ports in our NAT gateway. But, using the same code of JmsIO 
without the new version of Apache beam works fine.
   > 
   > >Note: We don't want to use the option `numberOfWorkerHarnessThreads`
   
   What is 300 coming from? Is it the number of thread per worker, or total 
number of bundles? This sounds like connection leaking.
   
   Also, what is the timeline for the fix? If not before the cut of 2.47 
(beginning of April we should revert #25887 at the moment


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