GitHub user tillrohrmann opened a pull request:

    https://github.com/apache/flink/pull/5436

    [FLINK-8613] [flip6] [yarn] Return excess containers

    ## What is the purpose of the change
    
    Upon notification of newly allocated containers, the YarnResourceManager
    will only accept as many containers as there are pending container requests.
    All excess containers will be returned.
    
    ## 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: (no)
    
    ## Documentation
    
      - Does this pull request introduce a new feature? (no)
      - If yes, how is the feature documented? (not applicable)


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/tillrohrmann/flink yarnReturnExcessContainers

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/5436.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #5436
    
----
commit 56ed240dd2c3e8f2775208ae349f137acb53bd34
Author: Till Rohrmann <trohrmann@...>
Date:   2018-02-07T16:00:40Z

    [FLINK-8613] [flip6] [yarn] Return excess containers
    
    Upon notification of newly allocated containers, the YarnResourceManager
    will only accept as many containers as there are pending container requests.
    All excess containers will be returned.

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