THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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- Change the handling of checkpoint barriers,
- Propose an API for persistently storing in-flight data,
- Sketch a first implementation that co-locates in-flight data with operator state,
- to allow them to overtake other records
- Enhance the checkpoint format,
- Recover from the new checkpoint while also allowing new checkpoints to be taken during recovering to guarantee progress, and
- Refine scaling of operators to match the changed checkpoint format.
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- Propose a solution of how the operators can be rescaled in the future
Handling of checkpoint barriers
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