[jira] [Updated] (SAMZA-1129) Add pluggable CoordinationService

["Xinyu Liu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SAMZA-1129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xinyu Liu updated SAMZA-1129:
-----------------------------
    Summary: Add pluggable CoordinationService  (was: Add plugable CoordinationService)

> Add pluggable CoordinationService
> ---------------------------------
>
>                 Key: SAMZA-1129
>                 URL: https://issues.apache.org/jira/browse/SAMZA-1129
>             Project: Samza
>          Issue Type: New Feature
>            Reporter: Xinyu Liu
>            Assignee: Boris Shkolnik
>
> In the local deployment mode, coordination is needed for the following scenarios:
> 1) Coordination on the job level: we need leader elector to generate the job model, and a barrier for all the followers to receive the job model after generation.
> 2) Coordination on the app level: we need leader elector to generate the intermediate streams, and a latch for all the processors to start after that.
> A plugable CoordinationService  can be shared for these use cases of group coordination. Samza will provide a Zk-based CoordinationService that can be used to construct the leader elector and latch.



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