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https://issues.apache.org/jira/browse/NIFI-1164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006919#comment-15006919
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Oleg Zhurakousky commented on NIFI-1164:
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The problem here is very similar to NIFI-1143 but with an addition of DISABLED
check. Checking for service state happens in many places, and some time many
times per cycle.
Will try to address it in a more consistent way which may require some
refactoring.
Will add additional tests to ensure the expectations are met.
> Race condition during initialization of ControllerServices - (part due)
> -----------------------------------------------------------------------
>
> Key: NIFI-1164
> URL: https://issues.apache.org/jira/browse/NIFI-1164
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 0.3.0
> Reporter: Oleg Zhurakousky
> Assignee: Oleg Zhurakousky
> Fix For: 0.4.0
>
>
> Similar to NIFI-1143, but the exception is happening in the different place
> {code}testConcurrencyWithEnablingReferencingServicesGraph(org.apache.nifi.controller.service.TestStandardControllerServiceProvider)
> Time elapsed: 0.162 sec <<< ERROR!
> java.lang.IllegalStateException: ServiceB[id=4] cannot be enabled because it
> is not disabled
> at
> org.apache.nifi.controller.service.StandardControllerServiceNode.verifyCanEnable(StandardControllerServiceNode.java:183)
> at
> org.apache.nifi.controller.service.StandardControllerServiceProvider.enableReferencingServices(StandardControllerServiceProvider.java:549)
> at
> org.apache.nifi.controller.service.StandardControllerServiceProvider.enableReferencingServices(StandardControllerServiceProvider.java:544)
> at
> org.apache.nifi.controller.service.TestStandardControllerServiceProvider.testEnableReferencingServicesGraph(TestStandardControllerServiceProvider.java:154)
> at
> org.apache.nifi.controller.service.TestStandardControllerServiceProvider.testConcurrencyWithEnablingReferencingServicesGraph(TestStandardControllerServiceProvider.java:124)
> {code}
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