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Nifi Failed to start web server. How to fix this?

Nifi Failed to start web server. How to fix this?

I start Nifi then it starts and within a minute, it throws following error in bootstrap logs :

2017-04-04 09:35:46,726 ERROR [NiFi logging handler] org.apache.nifi.StdErr Failed to start web server: null

2017-04-04 09:35:46,726 ERROR [NiFi logging handler] org.apache.nifi.StdErr Shutting down...

2017-04-04 09:35:47,732 INFO [main] org.apache.nifi.bootstrap.RunNiFi NiFi never started. Will not restart NiFi

Also, following is the stacktrace from nifi-app.log file :

2017-04-04 11:49:15,894 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down. java.lang.NullPointerException: null at org.apache.nifi.controller.repository.SchemaRepositoryRecordSerde.deserializeRecord(SchemaRepositoryRecordSerde.java:115) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.controller.repository.SchemaRepositoryRecordSerde.deserializeEdit(SchemaRepositoryRecordSerde.java:105) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.controller.repository.SchemaRepositoryRecordSerde.deserializeEdit(SchemaRepositoryRecordSerde.java:46) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.wali.MinimalLockingWriteAheadLog$Partition.recoverNextTransaction(MinimalLockingWriteAheadLog.java:1072) ~[nifi-write-ahead-log-1.1.1.jar:1.1.1] at org.wali.MinimalLockingWriteAheadLog.recoverFromEdits(MinimalLockingWriteAheadLog.java:459) ~[nifi-write-ahead-log-1.1.1.jar:1.1.1] at org.wali.MinimalLockingWriteAheadLog.recoverRecords(MinimalLockingWriteAheadLog.java:301) ~[nifi-write-ahead-log-1.1.1.jar:1.1.1] at org.apache.nifi.controller.repository.WriteAheadFlowFileRepository.loadFlowFiles(WriteAheadFlowFileRepository.java:346) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.controller.FlowController.initializeFlow(FlowController.java:700) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:701) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:508) ~[nifi-framework-core-1.1.1.jar:1.1.1] at org.apache.nifi.web.contextlistener.ApplicationStartupContextListener.contextInitialized(ApplicationStartupContextListener.java:69) ~[na:na] at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:837) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:533) ~[jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:810) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:345) ~[jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1404) ~[jetty-webapp-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1366) ~[jetty-webapp-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:772) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:262) ~[jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:520) ~[jetty-webapp-9.3.9.v20160517.jar:9.3.9.v20160517]

at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:106) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.gzip.GzipHandler.doStart(GzipHandler.java:231) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.Server.start(Server.java:411) ~[jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:106) ~[jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]

2 REPLIES 2
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Re: Nifi Failed to start web server. How to fix this?

Is this the first time you start NiFi, or you had been running for a while?

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Re: Nifi Failed to start web server. How to fix this?

Yes i restarted NIFI. Still, it was not working. Then I cleared contents of content_repository and provenance_repository. It worked.

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