GitHub user yanghua opened a pull request:

    [FLINK-8887][flip-6] ClusterClient.getJobStatus can throw 

    ## What is the purpose of the change
    *This pull request fixed ClusterClient.getJobStatus throw 
FencingTokenException issue*
    ## Brief change log
      - *try-catch request job status from job master gateway if catch a 
exception then goto : request job status  from archived execution graph store*
    ## Verifying this change
    This change is already covered by existing tests, such as 
    ## 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**)

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

    $ git pull FLINK-8887

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

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

    This closes #5648
commit 03c5bf0aa1536842359740b53f43e7b46f48b006
Author: vinoyang <vinoyang@...>
Date:   2018-03-07T03:43:10Z

    [FLINK-8887][flip-6] ClusterClient.getJobStatus can throw 



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