GitHub user sihuazhou opened a pull request:

    https://github.com/apache/flink/pull/5881

    [FLINK-9190][yarn] fix YarnResourceManager sometimes does not request new 
Containers

    ## What is the purpose of the change
    
    This PR fixes the problem that `YarnResourceManager` does not request new 
Containers when container were killed without registering with 
`ResourceManager`.
    
    ## Brief change log
    
      - *fix YarnResourceManager sometimes does not request new Containers*
    
    ## Verifying this change
    
      - *add unit test to 
`YarnResourceManagerTest#testKillContainerBeforeTMRegisterSuccessfully()` 
verify this*
    
    ## 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
    
    no

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

    $ git pull https://github.com/sihuazhou/flink 
fixYarnResourceManagerRequestContainers

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

    https://github.com/apache/flink/pull/5881.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 #5881
    
----
commit bbf03ca7fc709e11627560466bff01b9e750bbd2
Author: sihuazhou <summerleafs@...>
Date:   2018-04-20T05:02:28Z

    fix YarnResourceManager sometimes does not request new Containers

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