shunping commented on PR #36672:
URL: https://github.com/apache/beam/pull/36672#issuecomment-3466027378

   Looks like my fix also caused deadlock:
   - In the watermark evaluation loop, we always get `refreshCond.L first` and 
then `ss.mu`. 
   - However, in PersistBundle loop, when we need to addPending to aggregate 
kind, we first obtain `ss.mu` and then when evaluating trigger bundle, we need 
to obtain `refreshCond.L` for checking processing time etc.


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