Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3442
Looks good in general.
One thing that I stumbled across a lot in recent works on the checkpoints /
savepoints is that they all implement `equals` and `hashCode` and delegate to
the task states and handles, etc.
Do we need to define semantic equality there? It seems fragile to me,
because the state handles by themselves can in general not really make a good
claim about equality. The `FileStateHandle` for example fails to define
equality depending on whether there is a trailing '/' on a directory path or
not.
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