rkhachatryan opened a new pull request, #21981:
URL: https://github.com/apache/flink/pull/21981
## What is the purpose of the change
Adjust slot assignment by Adaptive Scheduler
to try to re-use previous allocations
so that TMs can use Local Recovery.
Contributed mostly by @dmvk.
The main defferences from the original contribution:
1. Previous `ExecutionGraph` is passed from the previous state explicitly
(currently, `WaitingForResources` stage, which triggers the computation,
doesn't have the graph)
2. In `SlotAssigner`, the split into two methods is removed mostly for
consistency (two methods mostly duplicated each other). That results in higher
asymptotical complexity of `StateLocalitySlotAssigner` (`O(mnlog*mnlog)` vs
`O(mnlog`)
3. DoP is computed according to FLINK-30895
## Brief change log
- Support LocalRecovery by AdaptiveScheduler
- Add previous ExecutionGraph to WaitingForResources AdaptiveScheduler state
- Make LocalRecoveryITCase fail when allocations don't match
## Verifying this change
- Adjusted `LocalRecoveryITCase`
- Added `SlotSharingSlotAllocatorTest.testStickyAllocation`
## 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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