Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3539
@shuai-xu Had a look at the changes. In general, I like the decoupling of
failover handling from the execution graph.
Some suggestions:
- How about we rename the `FailoverCoordinator` to `FailoverStrategy`?
- We should probably implement one very simple failover strategy (restart
all) and one better one (failover region based). That has the advantage of
having a default implementation that is simple and robust (same as now) for all
conservative users.
- I would suggest to let commands like `fail()` and `cancel()` that go
directly to the `ExecutionGraph` stay on the execution graph. They are meant to
apply the whole graph and not be specially handled. The failover coordinator
could only handle failures from individual tasks.
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