Tomassino-ibm commented on PR #1919:
URL: https://github.com/apache/pekko/pull/1919#issuecomment-3031825530

   Hi, I pushed some new commits: I added a feature flag to enable the fix and 
also ported the fix to DurableStateBehavior. I have, however, two questions.
   
   The first one is: when I added the configuration parameter to 
DurableStateSettings, I noticed that they are the same (I mean, also same 
config path) as the ones of EventSourcedSettings. Is this expected?
   
   The other one might be important, but I need help from somebody that is more 
familiar than me with pekko internals. The fix I added breaks the recursion by 
using a while loop in `onCommand` and storing recursive `onCommand` call 
parameters during the call to `onMessage`, which are then used when the control 
gets back to `onCommand`. There is, however, one function in the recursion 
chain, that calls another function _after_ the call leading to the recursion: 
`org.apache.pekko.actor.typed.Behavior$.interpret` calls `start` on the beavior 
returned by `onMessage`. Since it's not clear to me what `start` actually does 
and what "starting a behavior" means, my fear is that the recursive and 
non-recursive versions might do different things, at least in some edge cases. 
Can this be a problem?


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