[NIFI-1991] Zero Master Cluster: Modifying a disconnected node causes other nodes to not be able to join cluster

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: Core Framework
• Assignee: Unassigned
• Reporter: Andrew M. Lim
• Created: 09/Jun/16 19:24
• Updated: 13/Oct/16 13:47
• Resolved: 13/Oct/16 13:47

Description

I created a zero master cluster with 3 nodes. All three were up and running.

I stopped all 3 instances and then brought up just Node1.

In the Node1 UI, I made some edits to the flow.

I attempted but was not able to bring up Node2 and Node3 to join the cluster.

Here is what I saw in the logs:

2016-06-09 14:35:47,051 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down.
java.lang.Exception: Unable to load flow due to: java.io.IOException: org.apache.nifi.controller.UninheritableFlowException: Failed to connect node to cluster because local flow is different than cluster flow.
        at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:753) ~[nifi-jetty-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.NiFi.<init>(NiFi.java:137) [nifi-runtime-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.NiFi.main(NiFi.java:227) [nifi-runtime-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
Caused by: java.io.IOException: org.apache.nifi.controller.UninheritableFlowException: Failed to connect node to cluster because local flow is different than cluster flow.
        at org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:501) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:744) ~[nifi-jetty-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        ... 2 common frames omitted
Caused by: org.apache.nifi.controller.UninheritableFlowException: Failed to connect node to cluster because local flow is different than cluster flow.
        at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:862) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:497) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        ... 3 common frames omitted
Caused by: org.apache.nifi.controller.UninheritableFlowException: Proposed configuration is not inheritable by the flow controller because of flow differences: Found difference in Flows:
Local Fingerprint contains additional configuration from Cluster Fingerprint: eba77dac-32ad-356b-8a82-f669d046aa21eba77dac-32ad-356b-8a82-f669d046aa21org.apache.nifi.processors.standard.LogAttributeNO_VALUEAttributes to IgnoreNO_VALUEAttributes to LogNO_VALUELog prefixNO_VALUEs
        at org.apache.nifi.controller.StandardFlowSynchronizer.sync(StandardFlowSynchronizer.java:219) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.controller.FlowController.synchronize(FlowController.java:1329) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO.load(StandardXMLFlowConfigurationDAO.java:75) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:668) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:839) ~[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT]
        ... 4 common frames omitted
2016-06-09 14:35:47,052 INFO [Thread-1] org.apache.nifi.NiFi Initiating shutdown of Jetty web server...

Issue Links

• relates to: NIFI-1966 Address Issue of Nodes Disagreeing About Flow Contents on Startup