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NPE is parsing Fuseki Assembler file that used to work in 3.14.0

See original GitHub issue

Version

4.6.1

What happened?

I installed a new instance of Fuseki 4.6.1 and used an assembler file that used to work in our previous 3.14.0 instance. The assembler file is the following:

core.ttl.zip

Relevant output and stacktrace

The stacktrace is


09-Sep-2022 07:47:03.149 INFO [main] org.apache.catalina.core.ApplicationContext.log Initializing Shiro environment
09-Sep-2022 07:47:04.340 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [org.apache.jena.fuseki.webapp.FusekiServerListener]
	org.apache.jena.assembler.exceptions.AssemblerException: caught: null
  doing:
    root: http://base/#core_lucene_index with type: http://jena.apache.org/text#TextIndexLucene assembler class: class org.apache.jena.query.text.assembler.TextIndexLuceneAssembler
    root: http://base/#core_text_dataset with type: http://jena.apache.org/text#TextDataset assembler class: class org.apache.jena.query.text.assembler.TextDatasetAssembler

		at org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:165)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.open(AssemblerGroup.java:144)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$ExpandingAssemblerGroup.open(AssemblerGroup.java:93)
		at org.apache.jena.assembler.assemblers.AssemblerBase.open(AssemblerBase.java:39)
		at org.apache.jena.assembler.assemblers.AssemblerBase.open(AssemblerBase.java:35)
		at org.apache.jena.query.text.assembler.TextDatasetAssembler.open(TextDatasetAssembler.java:68)
		at org.apache.jena.query.text.assembler.TextDatasetAssembler.open(TextDatasetAssembler.java:42)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:157)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.open(AssemblerGroup.java:144)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$ExpandingAssemblerGroup.open(AssemblerGroup.java:93)
		at org.apache.jena.assembler.assemblers.AssemblerBase.open(AssemblerBase.java:39)
		at org.apache.jena.assembler.assemblers.AssemblerBase.open(AssemblerBase.java:35)
		at org.apache.jena.fuseki.build.FusekiConfig.getDataset(FusekiConfig.java:667)
		at org.apache.jena.fuseki.build.FusekiConfig.buildDataService(FusekiConfig.java:430)
		at org.apache.jena.fuseki.build.FusekiConfig.buildDataAccessPoint(FusekiConfig.java:417)
		at org.apache.jena.fuseki.build.FusekiConfig.readConfiguration(FusekiConfig.java:397)
		at org.apache.jena.fuseki.build.FusekiConfig.readConfigurationDirectory(FusekiConfig.java:376)
		at org.apache.jena.fuseki.webapp.FusekiWebapp.initializeDataAccessPoints(FusekiWebapp.java:221)
		at org.apache.jena.fuseki.webapp.FusekiServerListener.serverInitialization(FusekiServerListener.java:97)
		at org.apache.jena.fuseki.webapp.FusekiServerListener.contextInitialized(FusekiServerListener.java:57)
		at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4717)
		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5179)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726)
		at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:698)
		at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:747)
		at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1027)
		at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2001)
		at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
		at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
		at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118)
		at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:828)
		at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:478)
		at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1708)
		at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:320)
		at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
		at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423)
		at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:946)
		at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:886)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
		at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
		at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919)
		at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:265)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.startup.Catalina.start(Catalina.java:795)
		at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.base/java.lang.reflect.Method.invoke(Method.java:566)
		at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345)
		at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:476)
	Caused by: java.lang.NullPointerException
		at java.base/java.util.Hashtable.put(Hashtable.java:475)
		at org.apache.jena.query.text.analyzer.Util.defineAnalyzer(Util.java:93)
		at org.apache.jena.query.text.assembler.DefineAnalyzersAssembler.open(DefineAnalyzersAssembler.java:120)
		at org.apache.jena.query.text.assembler.TextIndexLuceneAssembler.open(TextIndexLuceneAssembler.java:135)
		at org.apache.jena.query.text.assembler.TextIndexLuceneAssembler.open(TextIndexLuceneAssembler.java:40)
		at org.apache.jena.assembler.assemblers.AssemblerGroup$PlainAssemblerGroup.openBySpecificType(AssemblerGroup.java:157)
		... 60 more
09-Sep-2022 07:47:04.372 INFO [main] org.apache.catalina.core.ApplicationContext.log Cleaning up Shiro Environment
09-Sep-2022 07:47:04.687 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
09-Sep-2022 07:47:04.687 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
09-Sep-2022 07:47:04.688 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@5a90df0')

Are you interested in making a pull request?

Maybe

Issue Analytics

  • State:closed
  • Created a year ago
  • Comments:5 (5 by maintainers)

github_iconTop GitHub Comments

1reaction
erouxcommented, Sep 9, 2022

after some debugging, it turns out this is triggered by the missing class "io.bdrc.lucene.km.KhmerAnalyzer". There’s a try / catch block but for some reason the error doesn’t appear in tomcat/logs/localhost.2022-09-09.log, it’s only when reproducing it locally in eclipse that I was able to see it. When testing locally though the NPE also appears, so there seems to be some issue further down the line when this exception occurs…

I’ll close this since I won’t debug further but I hope this issue might help people encountering the same issue

0reactions
erouxcommented, Sep 9, 2022

great

Read more comments on GitHub >

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