Feifan Wang created FLINK-30792:
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             Summary: clean up not uploaded state changes after materialization 
complete
                 Key: FLINK-30792
                 URL: https://issues.apache.org/jira/browse/FLINK-30792
             Project: Flink
          Issue Type: Bug
          Components: Runtime / State Backends
    Affects Versions: 1.16.0
            Reporter: Feifan Wang


We should clean up not uploaded state changes after materialization completed, 
otherwise it will cause (status quo) : 
 # subsequent checkpoints contain wrong state changes which before completed 
materialization
 # FileNotFound exception may occur when recovering from the above problematic 
checkpoint, because the state change files before completed materialization may 
have been deleted with the checkpoint subsuming.

Since state changes before completed materialization in 
FsStateChangelogWriter#notUploaded will not be used in any subsequent 
checkpoint, I suggest clean up it while handle materialization result. 

How do you think about this ? [~ym] , [~roman] 



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