[GitHub] wg1026688210 opened a new pull request #7185: [FLINK-10884] [yarn/mesos] adjust container memory param to set a safe margin from offheap memory

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wg1026688210 opened a new pull request #7185: [FLINK-10884] [yarn/mesos]  adjust  container memory param  to set a safe margin from offheap memory
URL: https://github.com/apache/flink/pull/7185
 
 
   What is the purpose of the change
   This pull request adjust yarn container memory parameters/
   
   Brief change log
   1.set a safe margin  from offHeapMemory .
   2.add a container memory config  "containerized.offheap-cutoff-ratio" default 0.25f   at org.apache.flink.configuration.TaskManagerOptions  
   3. change the unit test 
   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):  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: yes
   The S3 file system connector: i don't know
   Documentation
   Does this pull request introduce a new feature? add a config
   If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented) not documented

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