[GitHub] [flink] zhijiangW opened a new pull request #10539: [FLINK-14952][network] Solve the issue of exceeding memory limits when using mmap blocking partition

[GitBox <gi...@apache.org>]

zhijiangW opened a new pull request #10539: [FLINK-14952][network] Solve the issue of exceeding memory limits when using mmap blocking partition
URL: https://github.com/apache/flink/pull/10539
 
 
   ## What is the purpose of the change
   
   *As reported by users in mail list, the container would be killed by yarn because of exceeding physical memory limits. It is mainly because the memory usage of mmap in `BoundedBlockingSubpartition` is not capped and not accounted by configured memory limits, but yarn would track this memory usage and kill the container once exceeding some threshold.*
       
   *To solve this issue, we adjust the default option of `taskmanager.network.bounded-blocking-subpartition-type` from `auto` to `file` for safety usage. And users can still enable mmap way via configuration if they make a proper adjustment in yarn configuration to avoid container killing.*
   
   ## Brief change log
   
     - *Generates the respective html files for previous changed configurations*
     - *Adjusts the default option of blocking subpartition type from `auto` to `file`*
   
   ## Verifying this change
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ## 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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