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Matt Gilman commented on NIFI-5034: ----------------------------------- Ok. Let me do some more debugging. The line you referenced in FlowResource is only for services in the Controller Settings. > Error in Controller Service with dynamic property in Cluster environment > ------------------------------------------------------------------------ > > Key: NIFI-5034 > URL: https://issues.apache.org/jira/browse/NIFI-5034 > Project: Apache NiFi > Issue Type: Bug > Components: Core Framework > Affects Versions: 1.4.0, 1.5.0 > Reporter: Mark Bean > Priority: Major > > Environment: Controller Service provides a lookup service to other Controller > Services. To configure, the lookup CS uses dynamic properties where the key > is an arbitrary name and the value is an existing Controller Service. > In a cluster environment only (this is not an issue for stand-alone > environment), the UI displays returns "An unexpected error has occurred" due > to http 500 return code. This occurs when attempting to configure the > controller service with the dynamic property. Additionally, it throws the > same error (http 500) when trying to configure the process group owning the > lookup controller service. (The property on the controller service is created > despite the 500 return code.) > Diving into the code a bit, the fact of being a "cluster only" issue is in > FlowResource.java:400. > if (isReplicateRequest()) { > return replicate(HttpMethod.GET); > } > The problem is the return value is null even when controller services exist. > Ultimately, ApplicationResource.java:288 parses a map of http servlet > parameters. The controller service should be a parameter. Yet, this map is > empty. > for (final Map.Entry<String, String[]> entry : > httpServletRequest.getParameterMap().entrySet()) \{ ... } > This problem is preventing the implementation of a Controller Service with > dynamic properties (whose property values are other Controller Services) in a > cluster environment. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)