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Subject [GitHub] [flink] rkhachatryan opened a new pull request #17258: [WIP][FLINK-23342][state] State ownership: compute shared state on recovery
Date Mon, 13 Sep 2021 11:52:39 GMT

rkhachatryan opened a new pull request #17258:
URL: https://github.com/apache/flink/pull/17258


   This is an alternative implementation of FLINK-23342:
   Sharing information about the state is encoded into the state handles (specifically,low-level
state handles such as `FileStateHandle`)
   This information is passed between JM and TM in both directions and will be used in to
decide whether to delete state or not.
   
   To accomplish this, `StateAssignmentOperation` computes shared state based on state IDs
and rebuilds the snapshot before sending it to TM, marking the corresponding handles as shared.
   
   `SharedStateRegistry` is not affected by this change.
   
   cc: @StephanEwen 


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