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https://issues.apache.org/jira/browse/NIFI-10132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17555628#comment-17555628
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Greg Biddy edited comment on NIFI-10132 at 6/17/22 2:04 PM:
------------------------------------------------------------
[~exceptionfactory] - I haven't successfully been able to start the NiFi
service so I couldn't import it via the GUI. So I tried copying the contents
into a new file named 'flow.xml' and running gzip on it to result in flow.xml.gz
I've also encountered the same issue when copying flow.xml.gz from the 1.15.3
cluster directly over to the 1.16.3 cluster.
was (Author: JIRAUSER291108):
[~exceptionfactory] - I haven't successfully been able to start the NiFi
service so I couldn't import it via the GUI. So I tried copying the contents
into a new file named 'flow.xml' and running gzip on it to result in flow.xml.gz
> New NiFi Installation Fails to Start
> ------------------------------------
>
> Key: NIFI-10132
> URL: https://issues.apache.org/jira/browse/NIFI-10132
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.16.2, 1.16.3
> Environment: RHEL OS
> Reporter: Greg Biddy
> Priority: Blocker
> Attachments: test_template_1.15.3.xml
>
>
> I am attempting to deploy a NiFi cluster running NiFi 1.16.3. In all cases,
> the application fails to start. I have observed two errors in the nifi
> application log during the start-up process.
> One occurs if no flow.xml.gz is present in the conf directory when the nifi
> service is started:
> {code:java}
> 2022-06-16 20:30:51,774 INFO [main] org.apache.nifi.io.socket.SocketListener
> Now listening for connections from nodes on port 11443
> 2022-06-16 20:30:51,820 INFO [main] o.a.n.c.s.VersionedFlowSynchronizer
> Synchronizing FlowController with proposed flow: Controller Already
> Synchronized = false
> 2022-06-16 20:30:51,906 WARN [main] org.apache.nifi.web.server.JettyServer
> Failed to start web server... shutting down.
> java.lang.NullPointerException: null
> at
> org.apache.nifi.registry.flow.diff.StandardFlowDifference.hashCode(StandardFlowDifference.java:92)
> at java.util.HashMap.hash(HashMap.java:339)
> at java.util.HashMap.put(HashMap.java:612)
> at java.util.HashSet.add(HashSet.java:220)
> at
> org.apache.nifi.registry.flow.diff.StandardFlowComparator.addIfDifferent(StandardFlowComparator.java:567)
> at
> org.apache.nifi.registry.flow.diff.StandardFlowComparator.compare(StandardFlowComparator.java:456)
> at
> org.apache.nifi.registry.flow.diff.StandardFlowComparator.compare(StandardFlowComparator.java:94)
> at
> org.apache.nifi.registry.flow.diff.StandardFlowComparator.compare(StandardFlowComparator.java:79)
> at
> org.apache.nifi.controller.serialization.VersionedFlowSynchronizer.compareFlows(VersionedFlowSynchronizer.java:387)
> at
> org.apache.nifi.controller.serialization.VersionedFlowSynchronizer.sync(VersionedFlowSynchronizer.java:167)
> at
> org.apache.nifi.controller.serialization.StandardFlowSynchronizer.sync(StandardFlowSynchronizer.java:43)
> at
> org.apache.nifi.controller.FlowController.synchronize(FlowController.java:1524)
> at
> org.apache.nifi.persistence.StandardFlowConfigurationDAO.load(StandardFlowConfigurationDAO.java:107)
> at
> org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:819)
> at
> org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:461)
> at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1086)
> at org.apache.nifi.NiFi.<init>(NiFi.java:170)
> at org.apache.nifi.NiFi.<init>(NiFi.java:82)
> at org.apache.nifi.NiFi.main(NiFi.java:330) {code}
>
> The second error occurs if there is a flow.xml.gz present when the nifi
> service is started, where the flow is copied over from a cluster running
> 1.15.3:
> {code:java}
> 2022-06-16 20:29:31,101 INFO [main] org.apache.nifi.web.server.JettyServer
> Loading Flow...
> 2022-06-16 20:29:31,106 INFO [main] org.apache.nifi.io.socket.SocketListener
> Now listening for connections from nodes on port 11443
> 2022-06-16 20:29:31,130 WARN [main] org.apache.nifi.web.server.JettyServer
> Failed to start web server... shutting down.
> java.lang.NullPointerException: null
> at
> org.apache.nifi.util.DomUtils.getChildElementsByTagName(DomUtils.java:53)
> at
> org.apache.nifi.controller.serialization.FlowFromDOMFactory.getChildrenByTagName(FlowFromDOMFactory.java:635)
> at
> org.apache.nifi.controller.serialization.FlowFromDOMFactory.getString(FlowFromDOMFactory.java:582)
> at
> org.apache.nifi.controller.serialization.FlowFromDOMFactory.getProcessGroup(FlowFromDOMFactory.java:187)
> at
> org.apache.nifi.controller.XmlFlowSynchronizer.isFlowEmpty(XmlFlowSynchronizer.java:660)
> at
> org.apache.nifi.controller.XmlFlowSynchronizer.sync(XmlFlowSynchronizer.java:179)
> at
> org.apache.nifi.controller.serialization.StandardFlowSynchronizer.sync(StandardFlowSynchronizer.java:43)
> at
> org.apache.nifi.controller.FlowController.synchronize(FlowController.java:1524)
> at
> org.apache.nifi.persistence.StandardFlowConfigurationDAO.load(StandardFlowConfigurationDAO.java:107)
> at
> org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:819)
> at
> org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:461)
> at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1086)
> at org.apache.nifi.NiFi.<init>(NiFi.java:170)
> at org.apache.nifi.NiFi.<init>(NiFi.java:82)
> at org.apache.nifi.NiFi.main(NiFi.java:330)
> 2022-06-16 20:29:31,131 INFO [Thread-1] org.apache.nifi.NiFi Application
> Server shutdown started {code}
> Any guidance would be much appreciated.
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