LazyInitializationException during load test

[mdtamim]

I am able to fetch a OneToMany association when hitting a single request but getting "LazyInitializationException - could not initialize proxy - no Session" when performing load test.I tried enabling "enable_lazy_load_no_tran: true" in hibernate properties for the fix but getting below exception :

java.lang.NullPointerException: null
at org.hibernate.event.internal.EvictVisitor.evictCollection(EvictVisitor.java:79) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.EvictVisitor.evictCollection(EvictVisitor.java:64) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.EvictVisitor.processCollection(EvictVisitor.java:41) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:104) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.AbstractVisitor.processValue(AbstractVisitor.java:65) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:59) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.AbstractVisitor.process(AbstractVisitor.java:126) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.DefaultEvictEventListener.doEvict(DefaultEvictEventListener.java:122) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.internal.DefaultEvictEventListener.onEvict(DefaultEvictEventListener.java:78) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.internal.SessionImpl.evict(SessionImpl.java:1313) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at org.hibernate.internal.SessionImpl.detach(SessionImpl.java:3491) ~[hibernate-core-5.4.21.Final.jar:5.4.21.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:366) ~[spring-orm-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at com.sun.proxy.$Proxy134.detach(Unknown Source) ~[na:na]
at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:372) ~[na:1.8.0_171]
at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1359) ~[na:1.8.0_171]
at java.util.stream.StreamSpliterators$WrappingSpliterator.lambda$initPartialTraversalState$0(StreamSpliterators.java:294) ~[na:1.8.0_171]
at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.fillBuffer(StreamSpliterators.java:206) ~[na:1.8.0_171]
at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.doAdvance(StreamSpliterators.java:161) ~[na:1.8.0_171]
at java.util.stream.StreamSpliterators$WrappingSpliterator.tryAdvance(StreamSpliterators.java:300) ~[na:1.8.0_171]
at java.util.Spliterators$1Adapter.hasNext(Spliterators.java:681) ~[na:1.8.0_171]
at com.introproventures.graphql.jpa.query.schema.impl.ResultStreamWrapper$ListProxyInvocationHandler$ResultIteratorWrapper.hasNext(ResultStreamWrapper.java:93) ~[graphql-jpa-query-schema-0.4.16.jar:0.4.16]
at graphql.execution.ExecutionStrategy.completeValueForList(ExecutionStrategy.java:514) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeValueForList(ExecutionStrategy.java:485) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeValue(ExecutionStrategy.java:423) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeField(ExecutionStrategy.java:388) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.lambda$resolveFieldWithInfo$0(ExecutionStrategy.java:200) ~[graphql-java-13.0.jar:na]
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602) ~[na:1.8.0_171]
at java.util.concurrent.CompletableFuture.uniApplyStage(CompletableFuture.java:614) ~[na:1.8.0_171]
at java.util.concurrent.CompletableFuture.thenApply(CompletableFuture.java:1983) ~[na:1.8.0_171]
at graphql.execution.ExecutionStrategy.resolveFieldWithInfo(ExecutionStrategy.java:199) ~[graphql-java-13.0.jar:na]
at graphql.execution.AsyncExecutionStrategy.execute(AsyncExecutionStrategy.java:74) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeValueForObject(ExecutionStrategy.java:654) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeValue(ExecutionStrategy.java:438) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.completeField(ExecutionStrategy.java:388) ~[graphql-java-13.0.jar:na]
at graphql.execution.ExecutionStrategy.lambda$resolveFieldWithInfo$0(ExecutionStrategy.java:200) ~[graphql-java-13.0.jar:na]
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602) ~[na:1.8.0_171]
at java.util.concurrent.CompletableFuture.uniApplyStage(CompletableFuture.java:614) ~[na:1.8.0_171]
at java.util.concurrent.CompletableFuture.thenApply(CompletableFuture.java:1983) ~[na:1.8.0_171]
at graphql.execution.ExecutionStrategy.resolveFieldWithInfo(ExecutionStrategy.java:199) ~[graphql-java-13.0.jar:na]
at graphql.execution.AsyncExecutionStrategy.execute(AsyncExecutionStrategy.java:74) ~[graphql-java-13.0.jar:na]
at graphql.execution.Execution.executeOperation(Execution.java:161) ~[graphql-java-13.0.jar:na]
at graphql.execution.Execution.execute(Execution.java:102) ~[graphql-java-13.0.jar:na]
at graphql.GraphQL.execute(GraphQL.java:605) ~[graphql-java-13.0.jar:na]
at graphql.GraphQL.parseValidateAndExecute(GraphQL.java:538) ~[graphql-java-13.0.jar:na]
at graphql.GraphQL.executeAsync(GraphQL.java:502) ~[graphql-java-13.0.jar:na]
at graphql.GraphQL.execute(GraphQL.java:432) ~[graphql-java-13.0.jar:na]
at io.leangen.graphql.spqr.spring.web.servlet.DefaultGraphQLExecutor.execute(DefaultGraphQLExecutor.java:23) ~[graphql-spqr-spring-boot-autoconfigure-0.0.4.jar:na]
at io.leangen.graphql.spqr.spring.web.servlet.DefaultGraphQLExecutor.execute(DefaultGraphQLExecutor.java:11) ~[graphql-spqr-spring-boot-autoconfigure-0.0.4.jar:na]
at io.leangen.graphql.spqr.spring.web.GraphQLController.executeJsonPost(GraphQLController.java:42) ~[graphql-spqr-spring-boot-autoconfigure-0.0.4.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.38.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.38.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at brave.servlet.TracingFilter.doFilter(TracingFilter.java:68) ~[brave-instrumentation-servlet-5.12.3.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at brave.servlet.TracingFilter.doFilter(TracingFilter.java:87) ~[brave-instrumentation-servlet-5.12.3.jar:na]
at org.springframework.cloud.sleuth.instrument.web.LazyTracingFilter.doFilter(TraceWebServletAutoConfiguration.java:139) ~[spring-cloud-sleuth-core-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93) ~[spring-boot-actuator-2.3.4.RELEASE.jar:2.3.4.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) [tomcat-embed-core-9.0.38.jar:9.0.38]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.38.jar:9.0.38]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_171]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_171]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.38.jar:9.0.38]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]