Yi Pan (Data Infrastructure) created SAMZA-1483:
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Summary: Restart or fail Samza jobs in Zk-based standalone
processors when input topic partition changes
Key: SAMZA-1483
URL: https://issues.apache.org/jira/browse/SAMZA-1483
Project: Samza
Issue Type: Bug
Reporter: Yi Pan (Data Infrastructure)
This is related to SAMZA-1482. We need to handle input stream partition count
change in embedded Samza processors as well.
In Zk-based embedded Samza processors, when a input stream partition count
change is detected, we have the opportunity to trigger a JobModel update event,
which would:
# for stateless jobs, restart the embedded SamzaContainer w/ new input topic
partitions and new JobModel
# for stateful jobs, shutdown the embedded StreamProcessor by throwing
exceptions when the input topic partitions are different
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