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Posted to commits@samza.apache.org by "Navina Ramesh (JIRA)" <ji...@apache.org> on 2016/03/04 03:00:43 UTC

[jira] [Created] (SAMZA-887) Use cached JobModel everywhere in the Samza AM container

Navina Ramesh created SAMZA-887:
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             Summary: Use cached JobModel everywhere in the Samza AM container
                 Key: SAMZA-887
                 URL: https://issues.apache.org/jira/browse/SAMZA-887
             Project: Samza
          Issue Type: Bug
            Reporter: Navina Ramesh


Since the CoordinatorStreamConsumer is inefficient in how it stays up-to-date with the coordinator stream, it is not acceptable to call jobcoordinator.jobModel() to access the jobmodel within the AM container. This will trigger a "refreshJobModel" on each access. Instead, we should be using cached job model's reference (JobCoordinator.jobModelRef) to access the config. 

As of today, this incorrect access pattern can be seen StreamAppender.



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