Cloudera CDH/CDP 및 Hadoop EcoSystem, Semantic IoT등의 개발/운영 기술을 정리합니다. gooper@gooper.com로 문의 주세요.
halyard/rdf4j halyard 1.3의 rdf4j-server.war와 rdf4j-workbench.war를 tomcat deploy후 조회시 java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell발생시 조치사항
halyard 1.3에서 rdf4j-server.war와 rdf4j-workbench.war를 tomcat의 webapps에 deploy한후 Repositories->new repository해서 새로운 repository를 생성한후 Explore->Namespaces메유를 조회시 java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell 오류가 발생할 수 있는데 이는 halyard가 hbase에 triple data를 저장하는데 필요한 hbase의 라이브러리를 인식히지 못해서 발생하는 문제다.
이를 해결하기 위해서 Tomcat의 bin 디렉토리에 setenv.sh파일을 만들어 아래의 내용을 넣고 권한을 755로 부여한후 tomcat를 다시 기동해주면 된다.
------------------setenv.sh내용----------
export CLASSPATH="$CATALINA_HOME/lib/servlet-api.jar:"`hadoop classpath`:`$HOME/hbase/bin/hbase classpath
------------------------------오류내용--------------------------------------
HTTP Status 500 - org.eclipse.rdf4j.repository.RepositoryException: <html><head><title>Apache Tomcat/7.0.78 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u>Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
type Exception report
message org.eclipse.rdf4j.repository.RepositoryException: <html><head><title>Apache Tomcat/7.0.78 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u>Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: org.eclipse.rdf4j.repository.RepositoryException: <html><head><title>Apache Tomcat/7.0.78 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u>Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1303)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:977)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>root cause</b> <pre>java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
com.msd.gin.halyard.sail.HBaseSailFactory.getSail(HBaseSailFactory.java:57)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSail(SailRepositoryFactory.java:94)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSailStack(SailRepositoryFactory.java:77)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.getRepository(SailRepositoryFactory.java:63)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepositoryStack(LocalRepositoryManager.java:240)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepository(LocalRepositoryManager.java:211)
org.eclipse.rdf4j.repository.manager.RepositoryManager.getRepository(RepositoryManager.java:377)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.setRequestAttributes(RepositoryInterceptor.java:111)
org.eclipse.rdf4j.http.server.ServerInterceptor.preHandle(ServerInterceptor.java:34)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.preHandle(RepositoryInterceptor.java:89)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$FastClassBySpringCGLIB$$7a1fdc31.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$EnhancerBySpringCGLIB$$50d6562f.preHandle(<generated>)
org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:954)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>root cause</b> <pre>java.lang.ClassNotFoundException: org.apache.hadoop.hbase.Cell
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
com.msd.gin.halyard.sail.HBaseSailFactory.getSail(HBaseSailFactory.java:57)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSail(SailRepositoryFactory.java:94)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSailStack(SailRepositoryFactory.java:77)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.getRepository(SailRepositoryFactory.java:63)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepositoryStack(LocalRepositoryManager.java:240)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepository(LocalRepositoryManager.java:211)
org.eclipse.rdf4j.repository.manager.RepositoryManager.getRepository(RepositoryManager.java:377)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.setRequestAttributes(RepositoryInterceptor.java:111)
org.eclipse.rdf4j.http.server.ServerInterceptor.preHandle(ServerInterceptor.java:34)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.preHandle(RepositoryInterceptor.java:89)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$FastClassBySpringCGLIB$$7a1fdc31.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$EnhancerBySpringCGLIB$$50d6562f.preHandle(<generated>)
org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:954)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>note</b> <u>The full stack trace of the root cause is available in the Apache Tomcat/7.0.78 logs.</u></p><HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.78</h3></body></html>
org.eclipse.rdf4j.workbench.proxy.WorkbenchServlet.handleRequest(WorkbenchServlet.java:158)
org.eclipse.rdf4j.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:109)
org.eclipse.rdf4j.workbench.proxy.WorkbenchGateway.service(WorkbenchGateway.java:120)
org.eclipse.rdf4j.workbench.base.AbstractServlet.service(AbstractServlet.java:125)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.eclipse.rdf4j.workbench.proxy.CacheFilter.doFilter(CacheFilter.java:62)
org.eclipse.rdf4j.workbench.proxy.CookieCacheControlFilter.doFilter(CookieCacheControlFilter.java:53)
root cause
org.eclipse.rdf4j.repository.RepositoryException: <html><head><title>Apache Tomcat/7.0.78 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u>Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1303)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:977)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>root cause</b> <pre>java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/Cell
com.msd.gin.halyard.sail.HBaseSailFactory.getSail(HBaseSailFactory.java:57)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSail(SailRepositoryFactory.java:94)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSailStack(SailRepositoryFactory.java:77)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.getRepository(SailRepositoryFactory.java:63)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepositoryStack(LocalRepositoryManager.java:240)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepository(LocalRepositoryManager.java:211)
org.eclipse.rdf4j.repository.manager.RepositoryManager.getRepository(RepositoryManager.java:377)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.setRequestAttributes(RepositoryInterceptor.java:111)
org.eclipse.rdf4j.http.server.ServerInterceptor.preHandle(ServerInterceptor.java:34)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.preHandle(RepositoryInterceptor.java:89)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$FastClassBySpringCGLIB$$7a1fdc31.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$EnhancerBySpringCGLIB$$50d6562f.preHandle(<generated>)
org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:954)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>root cause</b> <pre>java.lang.ClassNotFoundException: org.apache.hadoop.hbase.Cell
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
com.msd.gin.halyard.sail.HBaseSailFactory.getSail(HBaseSailFactory.java:57)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSail(SailRepositoryFactory.java:94)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.createSailStack(SailRepositoryFactory.java:77)
org.eclipse.rdf4j.repository.sail.config.SailRepositoryFactory.getRepository(SailRepositoryFactory.java:63)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepositoryStack(LocalRepositoryManager.java:240)
org.eclipse.rdf4j.repository.manager.LocalRepositoryManager.createRepository(LocalRepositoryManager.java:211)
org.eclipse.rdf4j.repository.manager.RepositoryManager.getRepository(RepositoryManager.java:377)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.setRequestAttributes(RepositoryInterceptor.java:111)
org.eclipse.rdf4j.http.server.ServerInterceptor.preHandle(ServerInterceptor.java:34)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor.preHandle(RepositoryInterceptor.java:89)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$FastClassBySpringCGLIB$$7a1fdc31.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
org.eclipse.rdf4j.http.server.repository.RepositoryInterceptor$$EnhancerBySpringCGLIB$$50d6562f.preHandle(<generated>)
org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:954)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:300)
</pre></p><p><b>note</b> <u>The full stack trace of the root cause is available in the Apache Tomcat/7.0.78 logs.</u></p><HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.78</h3></body></html>
org.eclipse.rdf4j.http.client.SparqlSession.execute(SparqlSession.java:1132)
org.eclipse.rdf4j.http.client.SparqlSession.executeOK(SparqlSession.java:1056)
org.eclipse.rdf4j.http.client.SparqlSession.sendTupleQueryViaHttp(SparqlSession.java:831)
org.eclipse.rdf4j.http.client.SparqlSession.getTupleQueryResult(SparqlSession.java:760)
org.eclipse.rdf4j.http.client.SesameSession.getNamespaces(SesameSession.java:291)
org.eclipse.rdf4j.http.client.SesameSession.getNamespaces(SesameSession.java:273)
org.eclipse.rdf4j.repository.http.HTTPRepositoryConnection.getNamespaces(HTTPRepositoryConnection.java:798)
org.eclipse.rdf4j.workbench.commands.NamespacesServlet.service(NamespacesServlet.java:57)
org.eclipse.rdf4j.workbench.base.TransformationServlet.service(TransformationServlet.java:119)
org.eclipse.rdf4j.workbench.base.TransformationServlet.service(TransformationServlet.java:99)
org.eclipse.rdf4j.workbench.base.AbstractServlet.service(AbstractServlet.java:125)
org.eclipse.rdf4j.workbench.proxy.ProxyRepositoryServlet.service(ProxyRepositoryServlet.java:109)
org.eclipse.rdf4j.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:213)
org.eclipse.rdf4j.workbench.proxy.WorkbenchServlet.handleRequest(WorkbenchServlet.java:141)
org.eclipse.rdf4j.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:109)
org.eclipse.rdf4j.workbench.proxy.WorkbenchGateway.service(WorkbenchGateway.java:120)
org.eclipse.rdf4j.workbench.base.AbstractServlet.service(AbstractServlet.java:125)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.eclipse.rdf4j.workbench.proxy.CacheFilter.doFilter(CacheFilter.java:62)
org.eclipse.rdf4j.workbench.proxy.CookieCacheControlFilter.doFilter(CookieCacheControlFilter.java:53)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.78 logs.
Apache Tomcat/7.0.78
