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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/11/27 07:27:00 UTC
[GitHub] [flink] xintongsong opened a new pull request #10330:
[FLINK-14189][runtime] Extend TaskExecutor to support dynamic slot allocation
xintongsong opened a new pull request #10330: [FLINK-14189][runtime] Extend TaskExecutor to support dynamic slot allocation
URL: https://github.com/apache/flink/pull/10330
## What is the purpose of the change
This PR is part fo FLIP-56. It extends `TaskExecutor` to support dynamic slot allocation.
With this PR, the `TaskExecutor` now supports both previous static slot allocation and the new dynamic allocation.
- For dynamic slot allocation, a special `SlotID` (with negative slot index) needs to be provided, as well as a `ResourceProfile` to describe the requested slot resources.
- For static slot allocation, a normal `SlotID` (with slot index in the range of `[0, slotNumber)`) needs to be provided. In such cases, the provided `ResourceProfile` will be ignored, and the default slot resource profile derived from configuration will be used.
This PR is based on #10146.
## Brief change log
- a23d4e5bb9e6d8de936224e62225ca17ae5c8957..927a11838172fe792636923e9378677f92a48b73: Commits of previous PRs.
- ef3dd3dceccca803a204813b6777ff8d22ffa170..00c2c39433aeaee6380e2df35fab64e4688d24d9: Hot-fixes and code clean-ups.
- ccb13bf72c7109e5b4fa5debf5f66e0b8c01776d: Dynamically create a slot on allocation and destroy a slot on free.
- ad0944250413e92e31da943d64d8ac6e1d03c2a0: Support allocate slots without pre-defined slot id.
- 38ccce57501562d1bc0e182e246c7a126a589fbe: Introduce `ResourceProfileBookkeeper` for managing resource reserving and releasing of slots.
- 74a47e3970a450c64911e458179912dbc2be16db: Use `ResourceProfileBookkeeper` to bookkeep allocated / available resources on the TM side.
- 4af0ae0c53dd7752d3c0acbd0928176c151403b1: Generate slot report with TM available resources.
- 837f4a9a70f1950f45e7ce766ffd77f286bbc3c8: Task executor supports allocating slots with dynamic resources.
## Verifying this change
Added unit test cases in `TaskSlotTableTest` and `TaskExecutorTest`.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)
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