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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7805) Add HA capabilities to YarnResourceManager
Date Wed, 28 Feb 2018 12:30:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16380212#comment-16380212
] 

ASF GitHub Bot commented on FLINK-7805:
---------------------------------------

GitHub user GJL opened a pull request:

    https://github.com/apache/flink/pull/5597

    [FLINK-7805][flip6] Add HA capabilities to YarnResourceManager

    ## What is the purpose of the change
    
    *Recover previously running containers after a restart of the ApplicationMaster.
    This is a port of a feature that was already implemented prior to FLIP-6.*
    
    cc: @tillrohrmann 
    
    
    ## Brief change log
    
      - *Extract `RegisterApplicationMasterResponseReflector` class into separate file.*
      - *Use `RegisterApplicationMasterResponseReflector` from within `YarnResourceManager`*
    
    ## Verifying this change
    
    This change added tests and can be verified as follows:
      - *Added unit tests for `RegisterApplicationMasterResponseReflector`*
      - *Manually deployed a cluster on YARN with HA enabled. Submitted a job, and killed
the master several times. Verified that the right log messages were generated ("Recovered
X containers from previous attempts"), and that the taskmanager resource ids remained the
same.*
    
    ## 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 https://github.com/GJL/flink FLINK-7805-2

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

    https://github.com/apache/flink/pull/5597.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 #5597
    
----
commit 012f656705466cea4ba2e037f7e52f46c0a1bf9f
Author: gyao <gary@...>
Date:   2018-02-27T15:58:53Z

    [FLINK-8787][flip6] Do not copy flinkConfiguration in AbstractYarnClusterDescriptor

commit bf8211112c16a16bd29aba754c1c34f4de960af4
Author: gyao <gary@...>
Date:   2018-02-28T12:04:19Z

    [hotfix] Add missing space to log message in ZooKeeperLeaderElectionService

commit a435c6503dcd8e65e34b807d5dc1c7045911e788
Author: gyao <gary@...>
Date:   2018-02-28T12:06:00Z

    [hotfix][Javadoc] Fix typo in YARN Utils: teh -> the

commit 3e4c28c38cc04aa29bdb8928fa26daf3c4ab1e69
Author: gyao <gary@...>
Date:   2018-02-28T12:07:04Z

    [hotfix][Javadoc] Fix typo in YarnTestBase: teh -> the

commit 6b1efdb290c605d93f17fc0aadfb07205eaf60fd
Author: gyao <gary@...>
Date:   2018-02-28T12:08:25Z

    [hotfix][tests] Fix wrong assertEquals in YARNSessionCapacitySchedulerITCase
    
    Test swapped actual and expected arguments.
    Remove catching Throwable in test; instead propagate all exceptions.

commit 615c19acfc87bad021b3dce02b6dc5fac2aac784
Author: gyao <gary@...>
Date:   2018-02-28T12:20:23Z

    [FLINK-7805][flip6] Recover YARN containers after AM restart.
    
    Recover previously running containers after a restart of the ApplicationMaster.
    This is a port of a feature that was already implemented prior to FLIP-6.
    Extract RegisterApplicationMasterResponseReflector class into separate file.

----


> Add HA capabilities to YarnResourceManager
> ------------------------------------------
>
>                 Key: FLINK-7805
>                 URL: https://issues.apache.org/jira/browse/FLINK-7805
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination, YARN
>    Affects Versions: 1.4.0
>            Reporter: Till Rohrmann
>            Assignee: Gary Yao
>            Priority: Major
>              Labels: flip-6
>
> The new {{YarnResourceManager}} implementation does not retrieve allocated containers
from previous attempts in HA mode like the old {{YarnFlinkResourceManager}} did. We should
add this functionality in order to properly support long running Yarn applications [1].
> [1] https://de.hortonworks.com/blog/apache-hadoop-yarn-hdp-2-2-fault-tolerance-features-long-running-services/



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