tillrohrmann commented on issue #11048: [FLINK-15966][runtime] Capture 
callstacks for RPC ask() calls to improve exceptions.
URL: https://github.com/apache/flink/pull/11048#issuecomment-592013594
 
 
   I couldn't find any direct usages of `akka.AskTimeoutException` in the 
production code. There is only usage in `ResourceManagerTaskExecutorTest` which 
might be affected by this change. 
   
   Apart from that the danger might be that users rely on `AskTimeoutException` 
for some exception matching. My gut feeling would be that this is more of a 
theoretical problem since the `AskTimeoutException` does not really add a lot 
of context and I would be surprised if people would really rely on it.
   
   Hence, we could backport it but if we want to be on the safe side, then we 
only introduce it with Flink 1.11.

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