[NIFI-4208] Node failed to join cluster due to NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 20/Jul/17 14:06
• Updated: 15/Aug/17 16:12
• Resolved: 15/Aug/17 16:12

Description

A clustered node ran out of disk space. Upon restart, I came across the following error:

2017-07-20 09:03:00,988 ERROR [main] o.a.nifi.controller.StandardFlowService Failed to load flow from cluster due to: org.apache.nifi.cluster.ConnectionException: Failed to connect node to cluster due to: java.lang.NullPointerException
org.apache.nifi.cluster.ConnectionException: Failed to connect node to cluster due to: java.lang.NullPointerException
at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:945)
at org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:515)
at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:800)
at org.apache.nifi.NiFi.<init>(NiFi.java:160)
at org.apache.nifi.NiFi.main(NiFi.java:267)
Caused by: java.lang.NullPointerException: null
at org.apache.nifi.controller.repository.RepositoryRecordSerde.getRecordIdentifier(RepositoryRecordSerde.java:43)
at org.apache.nifi.controller.repository.RepositoryRecordSerde.getRecordIdentifier(RepositoryRecordSerde.java:26)
at org.wali.MinimalLockingWriteAheadLog$Partition.recoverNextTransaction(MinimalLockingWriteAheadLog.java:1132)
at org.wali.MinimalLockingWriteAheadLog.recoverFromEdits(MinimalLockingWriteAheadLog.java:459)
at org.wali.MinimalLockingWriteAheadLog.recoverRecords(MinimalLockingWriteAheadLog.java:301)
at org.apache.nifi.controller.repository.WriteAheadFlowFileRepository.loadFlowFiles(WriteAheadFlowFileRepository.java:381)
at org.apache.nifi.controller.FlowController.initializeFlow(FlowController.java:713)
at org.apache.nifi.controller.StandardFlowService.initializeController(StandardFlowService.java:955)
at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:927)
... 4 common frames omitted

Issue Links

• links to: GitHub Pull Request #2086