tillrohrmann opened a new pull request #18542:
URL: https://github.com/apache/flink/pull/18542
## What is the purpose of the change
This commit allows the JobMaster to accept excess slots when the job is
restarting.
The way it works is that the DefaultScheduler tells the
DefaultSlotPoolBridge when
the job is restarting. If during this time new slots should be offered, then
the
DefaultSLotPoolBridge calls DeclarativeSlotPool.registerSlots which accepts
all
slot offers. Once the job leaves the RESTARTING state, the
DefaultSlotPoolBridge
will call DeclarativeSlotPool.offerSlots which only accepts those slots that
are
currently required.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (**yes** / no / don't
know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
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