Cameron Lee created SAMZA-1709:
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Summary: Use lazy creation for SystemAdmins in ApplicationRunners
Key: SAMZA-1709
URL: https://issues.apache.org/jira/browse/SAMZA-1709
Project: Samza
Issue Type: Improvement
Reporter: Cameron Lee
Assignee: Cameron Lee
An instance of SystemAdmins is created when instantiating any
AbstractApplicationRunner, but the SystemAdmins is only actually needed for
some of the methods for some of the runners. For example,
LocalApplicationRunner.kill does not need SystemAdmins, and
LocalContainerRunner does not need SystemAdmins for anything.
Doing lazy instantiation allows us to more easily manage the SystemAdmins
lifecycle, since it removes the need to add lifecycle hooks for the
ApplicationRunner.
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