Greg Biddy created NIFI-10132:
---------------------------------
Summary: 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: 1.16.3, 1.16.2
Environment: RHEL OS
Reporter: Greg Biddy
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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