zhuzhurk opened a new pull request #10398: [FLINK-14936][runtime] Introduce MemoryManager#computeMemorySize to calculate managed memory size from a fraction URL: https://github.com/apache/flink/pull/10398 ## What is the purpose of the change A `MemoryManager#computeMemorySize(double fraction)` is needed to calculate managed memory bytes from a fraction. It can be helpful for operators to get the memory size it can reserve and for further #reserveMemory. (Similar to `#computeNumberOfPages`). Here are two cases that may need this method in near future: 1. Python operator memory management 2. Statebackend memory management ## Brief change log - *Added MemoryManager#computeMemorySize* ## Verifying this change This change added tests and can be verified as follows: - *Added unit tests for MemoryManager#computeMemorySize* ## 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, Yarn/Mesos, 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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