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From StephanEwen <...@git.apache.org>
Subject [GitHub] flink issue #3599: [FLINK-6174][HA]introduce a new election service to make ...
Date Fri, 24 Mar 2017 15:16:53 GMT
Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/3599
  
    I would suggest to fix this the following way:
    
      - There is an upcoming patch that makes the Flink codebase use the `HighAvailabilityServices`
properly in all places.
      - We introduce a new HA mode called `yarnsimple` or so (next to `none` and `zookeeper`)
and instantiate a new implementation of `HighAvailabilityServices` which is ZooKeeper independent.
      - The new implementation of the High Availability Services does not use ZooKeeper. It
uses a leader service that always grants the JobManager leadership, but also implements a
way for TaskManagers to find the JobManager (to be seen how, possibly a file in HDFS or so).
It also implements a ZooKeeper independent CompletedCheckpointStore that finds checkpoints
by maintaining a file with completed checkpoints.
    
    That is all not a "proper" HA setup - it only works as long as there is strictly only
one master
    But it comes close and is ZooKeeper independent.
    
    Is that what you are looking for?


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