wollowizard commented on issue #41108:
URL: https://github.com/apache/beam/issues/41108#issuecomment-6774948234

   hello @parveensania here the job id : 
`2026-11-07_05_48_49-9397773842971649284` .  
   For completeness, since this seemed a runner problem, I reported this as a 
support case and got a reply confirming that this is a bug, and I understand 
it's in the beam library.
   
   _Due to a flow-control issue in the Beam 2.77.0 DirectPath client, the 
worker can request work items faster than its local queue admits them, leaving 
incoming items buffered in the gRPC stream for 25–35+ seconds. While buffered 
in the stream, those items are neither executing on the worker (which explains 
the low CPU and near-zero state reads) nor receiving worker heartbeats. Once 30 
seconds pass, their leases expire on the backend, triggering the retry burst._
   
   I hope this is useful.


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