[jira] [Assigned] (FLINK-10498) Decouple ExecutionGraph from JobMaster

["Till Rohrmann (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-10498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann reassigned FLINK-10498:
-------------------------------------

    Assignee: Till Rohrmann

> Decouple ExecutionGraph from JobMaster
> --------------------------------------
>
>                 Key: FLINK-10498
>                 URL: https://issues.apache.org/jira/browse/FLINK-10498
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Distributed Coordination
>    Affects Versions: 1.7.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>             Fix For: 1.7.0
>
>
> With declarative resource management we want to react to the set of available resources. Thus, we need a component which is responsible for scaling the {{ExecutionGraph}} accordingly. In order to better do this and separate concerns, it is beneficial to introduce a {{Scheduler/ExecutionGraphDriver}} component which is in charge of the {{ExecutionGraph}}. This component owns the {{ExecutionGraph}} and is allowed to modify it. In the first version, this component will simply accommodate all the existing logic of the {{JobMaster}} and the respective {{JobMaster}} methods are forwarded to this component. 
> This new component should not change the existing behaviour of Flink.
> Later this component will be in charge of announcing the required resources, deciding when to rescale and executing the rescaling operation.



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