Jagadish created SAMZA-1769:
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Summary: AppRunner#Status should not throw exceptions
Key: SAMZA-1769
URL: https://issues.apache.org/jira/browse/SAMZA-1769
Project: Samza
Issue Type: Bug
Reporter: Jagadish
The first step in computing the status of a StreamApplication is to run the
ExecutionPlanner. Hence, any misconfiguration by users that can cause the
planner to fail will also cause AppRunner#status to fail.
To make the computing of AppRunner#status more robust, we should not rely on
the entire ExecutionPlan. Instead, a short-term alternative might be to
directly query the cluster-manager by providing the app-name and app-id. The
YARNJob class implements a lot of this logic - So, should offer us good
leverage here.
For the long-term, it would be preferrable to rely on the MetadataStore
abstraction in Samza to store history about runs of an application.
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