[jira] [Updated] (FLINK-28831) [3] Support pluginable decorators mechanism

["Flink Jira Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-28831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flink Jira Bot updated FLINK-28831:
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    Labels: pull-request-available stale-assigned  (was: pull-request-available)

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> [3] Support pluginable decorators mechanism
> -------------------------------------------
>
>                 Key: FLINK-28831
>                 URL: https://issues.apache.org/jira/browse/FLINK-28831
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Deployment / Kubernetes
>            Reporter: bo zhao
>            Assignee: bo zhao
>            Priority: Major
>              Labels: pull-request-available, stale-assigned
>
> Introduce a pluginable decorators mechanism into Flink JobManager and TaskManager. Currently, all decorators are hard-coded in the JobManager deployment and TaskManager pod K8S creation.
>  
> We propose using SPI or Flink plugins mechanism to load the external decorators. In this way, we can make Flink more flexible towards supporting the decorators of customized K8S schedulers.
> We propose a new plugin mechanism for supporting load the jar package of a single customized scheduler. The driver jar package should contain the specific K8sStepDecorator and its dependencies. Taking an example, the jar package should be packaged into the ‘opt’ directory, and contains 2 major things:
>  # A K8sStepDecorator implemented by Customized K8S SchedulerA.
>  # The all dependencies from the introduced K8sStepDecorator.
> when users want to use the customized scheduler A, he/she need to create a new directory which named as the customized scheduler’s name A, then copy & paste the said jar into the new directory, that could be loaded when user specific the related Flink K8S configuration options and enable the functionality in Flink.



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