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This would help for most of the jobs that are experiencing some back pressure. There are some edge cases, like very large parallelism jobs, with relatively small state, where user doesn't care about the checkpointing to completely timely, while the back pressure is not large enough to cause checkpoint timeouts. For those users change to the unaligned checkpoints will significantly increase state size, without any benefits. However I expect such cases to be far more rare compared to the jobs that would benefit from enabling unaligned checkpoints.

This change would have to be clearly visible in the release notes.

Test Plan

None.

Rejected Alternatives

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