Brandon DeVries created NIFI-2491:
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Summary: ControllerService startup issue
Key: NIFI-2491
URL: https://issues.apache.org/jira/browse/NIFI-2491
Project: Apache NiFi
Issue Type: Bug
Reporter: Brandon DeVries
Priority: Minor
In the process of testing NIFI-2160 and NIFI-2344, we found that if a
controller service throws some type of RuntimeException(e.g.
IllegalStateException) in its @OnEnabled method it will essentially "break the
chain" of startup of things that depend on it. The end result is that in a
cluster, you can have a processor that is running on some nodes and stopped on
others. This probably isn't the desired behavior. In
StandardControllerServiceProvider\[1\] when thrown Exceptions are caught, we
should possibly retry enabling the service. If it can't be enabled... we might
want to consider shutting down NiFi. That's sort of extreme, but allowing the
cluster to enter an inconsistent state seems like a bad thing. We could
possibly also come up with some way of indicating there's an inconsistency in
the UI. The proper solution will require some consideration, but the issue
needs to be addressed somehow.
\[1\]
https://github.com/apache/nifi/blob/rel/nifi-0.7.0/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceProvider.java#L320-L325
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