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Posted to issues@flink.apache.org by StephanEwen <gi...@git.apache.org> on 2015/08/10 20:22:16 UTC

[GitHub] flink pull request: [FLINK-2314] - Added Checkpointing to File Sou...

Github user StephanEwen commented on the pull request:

    https://github.com/apache/flink/pull/997#issuecomment-129556271
  
    I agree with @chenliang613 , it would be great to have a brief description how this mechanism is implemented.
    
    I think there is also a problem still, because InputSplits are assigned once again after the dataflow graph (ExecutionGraph) is restarted. Since their assignment is lazy (to better load balance), they may get distributed in a different way on the re-try, compared to the original execution.
    
    To fix this, the input split assignment would need to be part of the checkpoints as well.


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