[NIFI-8731] When updating Parameter Context, sometimes see failure: processor cannot be started because it is not stopped. Current state is STOPPING

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.14.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 23/Jun/21 15:27
• Updated: 25/Jun/21 16:41
• Resolved: 25/Jun/21 16:41

Description

To replicate:

• Create a Process Group with a Parameter Context bound
• Create a Processor that references a Parameter
• Start the Processor
• Change Parameter to a value that will make the processor invalid
• Attempt to change the Parameter again

This will result in a stack trace similar to:

org.apache.nifi.web.util.LifecycleManagementException: Failed to transition components to a state of RUNNING due to Node localhost:8481 is unable to fulfill this request due to: 3528126f-017a-1000-0000-0000003d5574 cannot be started because it is not stopped. Current state is STOPPING
        at org.apache.nifi.web.util.ClusterReplicationComponentLifecycle.scheduleComponents(ClusterReplicationComponentLifecycle.java:128)
        at org.apache.nifi.web.api.ParameterContextResource.restartProcessors(ParameterContextResource.java:987)
        at org.apache.nifi.web.api.ParameterContextResource.updateParameterContext(ParameterContextResource.java:885)
        at org.apache.nifi.web.api.ParameterContextResource.lambda$submitUpdateRequest$17(ParameterContextResource.java:812)
        at org.apache.nifi.web.api.concurrent.AsyncRequestManager$2.run(AsyncRequestManager.java:117)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748) 

Issue Links

• links to: GitHub Pull Request #5180