# Hibernate Search + Elastic Search + concurrency error log
**URL:** https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982
**Category:** Hibernate Search
**Created:** [January 27, 2021, 10:43am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982 "2021-01-27T10:43:49Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 27, 2021, 10:43am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/1 "2021-01-27T10:43:50Z")
Hi ,
Using Hibernate Search
and fallback to this some time not very frequent
2021-01-27 11:17:09,513 ERROR org.hibernate.AssertionFailure [https-jsse-nio-8455-exec-2] HHH000099: an assertion failure occurred (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: force initialize loading collection
org.hibernate.AssertionFailure: force initialize loading collection
at org.hibernate.collection.internal.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:775)
at org.hibernate.engine.internal.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:973)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:359)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:324)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2406)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64)
at org.hibernate.loader.entity.EntityLoader.loadByUniqueKey(EntityLoader.java:144)
at org.hibernate.persister.entity.AbstractEntityPersister.loadByUniqueKey(AbstractEntityPersister.java:2384)
at org.hibernate.type.EntityType.loadByUniqueKey(EntityType.java:744)
at org.hibernate.type.EntityType.resolve(EntityType.java:467)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:226)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:160)
at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.performTwoPhaseLoad(AbstractRowReader.java:255)
at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.finishUp(AbstractRowReader.java:215)
at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:137)
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:105)
at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:197)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4350)
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:569)
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:537)
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:208)
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:332)
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:108)
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:74)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1168)
at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1033)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:687)
at org.hibernate.type.EntityType.resolve(EntityType.java:464)
at org.hibernate.type.ManyToOneType.resolve(ManyToOneType.java:240)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:226)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:160)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1179)
at org.hibernate.loader.Loader.processResultSet(Loader.java:1028)
at org.hibernate.loader.Loader.doQuery(Loader.java:964)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
at org.hibernate.loader.Loader.doList(Loader.java:2815)
at org.hibernate.loader.Loader.doList(Loader.java:2797)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2629)
at org.hibernate.loader.Loader.list(Loader.java:2624)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:396)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1396)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1558)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1526)
at org.hibernate.query.Query.getResultList(Query.java:165)
at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:76)
at org.hibernate.search.mapper.orm.search.loading.impl.HibernateOrmEntityIdEntityLoader.doLoadEntities(HibernateOrmEntityIdEntityLoader.java:140)
at org.hibernate.search.mapper.orm.search.loading.impl.HibernateOrmEntityIdEntityLoader.loadBlocking(HibernateOrmEntityIdEntityLoader.java:70)
at org.hibernate.search.engine.search.loading.spi.DefaultProjectionHitMapper.loadBlocking(DefaultProjectionHitMapper.java:42)
at org.hibernate.search.backend.elasticsearch.search.query.impl.ElasticsearchLoadableSearchResult.loadBlocking(ElasticsearchLoadableSearchResult.java:69)
at org.hibernate.search.backend.elasticsearch.search.query.impl.ElasticsearchSearchQueryImpl.fetch(ElasticsearchSearchQueryImpl.java:130)
at org.hibernate.search.backend.elasticsearch.search.query.impl.ElasticsearchSearchQueryImpl.fetch(ElasticsearchSearchQueryImpl.java:48)
at org.hibernate.search.engine.search.query.spi.AbstractSearchQuery.fetch(AbstractSearchQuery.java:40)
at be.belgiantrain.sale.service.SaleSearchServiceImpl.search(SaleSearchServiceImpl.java:129)
at sun.reflect.GeneratedMethodAccessor406.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
at be.belgiantrain.sale.service.$Proxy189.search(Unknown Source)
at be.belgiantrain.sale.service.SaleSearchWebService.search(SaleSearchWebService.java:72)
at be.belgiantrain.sale.service.SaleSearchWebService$$FastClassBySpringCGLIB$$46de3fd.invoke()
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:69)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
at be.belgiantrain.sale.service.SaleSearchWebService$$EnhancerBySpringCGLIB$$d35cb05.search()
at sun.reflect.GeneratedMethodAccessor404.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:142)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:998)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:901)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:875)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at be.belgiantrain.security.config.JwtAuthorizationFilter.doFilterInternal(JwtAuthorizationFilter.java:60)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:154)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:122)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:107)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
2021-01-27 11:17:09,517 ERROR org.apache.juli.logging.DirectJDKLog [https-jsse-nio-8455-exec-2] Servlet.service() for servlet [dispatcherServlet] in context with path [/api] threw exception [Request processing failed; nested exception is org.hibernate.AssertionFailure: force initialize loading collection] with root cause
org.hibernate.AssertionFailure: force initialize loading collection
at org.hibernate.collection.internal.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:775)
at org.hibernate.engine.internal.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:973)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:359)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:324)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2406)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64)
at org.hibernate.loader.entity.EntityLoader.loadByUniqueKey(EntityLoader.java:144)
at org.hibernate.persister.entity.AbstractEntityPersister.loadByUniqueKey(AbstractEntityPersister.java:2384)
at org.hibernate.type.EntityType.loadByUniqueKey(EntityType.java:744)
at org.hibernate.type.EntityType.resolve(EntityType.java:467)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:226)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:160)
at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.performTwoPhaseLoad(AbstractRowReader.java:255)
at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.finishUp(AbstractRowReader.java:215)
---
### Author:  [@yrodiere](https://discourse.hibernate.org/u/yrodiere)
#### Post date: [January 27, 2021, 11:32am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/2 "2021-01-27T11:32:55Z")
Hi.
This was a Beta version of Hibernate Search. Although I’ve never seen this problem, it’s very possible that it no longer occurs in recent version. Please upgrade to `6.0.0.Final` and tell us if this still occurs?
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 27, 2021, 12:56pm UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/3 "2021-01-27T12:56:35Z")
it seems like multithread environment has this issue.
this product is in early prod release and cant be change soon.
but we never have this issue in any of test environments
concurrency is about 200.
[Exception in multi-thread application · Issue #167 · dkpro/dkpro-uby · GitHub](https://github.com/dkpro/dkpro-uby/issues/167)
Exception in multi-thread application · Issue #167 · dkpro/dkpro-uby
Hello, I am using your library with the Hibernate support and it works great. At the moment I have started to use an improved implementation of my algorithm that uses multiple threads. When the num…
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---
### Author:  [@yrodiere](https://discourse.hibernate.org/u/yrodiere)
#### Post date: [January 27, 2021, 1:35pm UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/4 "2021-01-27T13:35:52Z")
Indeed, you should not use the same `Session` in multiple threads.
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 28, 2021, 8:20am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/5 "2021-01-28T08:20:01Z")
here is the configurations
and in hibernate search
and rest other crud operations are done using spring data jpa
---
### Author:  [@yrodiere](https://discourse.hibernate.org/u/yrodiere)
#### Post date: [January 28, 2021, 8:30am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/6 "2021-01-28T08:30:15Z")
Well you’re using spring, so you shouldn’t create the entity manager yourself. Let Spring create it, and inject it into your methods. Try something like this:
```java
@Bean
@Autowired
public SearchSession searchSession(EntityManager entityManager) {
return Search.session(entityManager);
}
@Bean
@Autowired
public SearchMapping searchMapping(EntityManagerFactory entityManagerFactory) {
SearchMapping mapping = Search.mapping(entityManagerFactory);
if (reindex) {
mapping.scope(Object.class)
.massIndexer().dropAndCreateSchemaOnStart(true)
.threadsToLoadObjects(6).startAndWait();
}
return mapping;
}
```
And above all, **UPGRADE TO 6.0.0.Final**.
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 28, 2021, 8:34am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/7 "2021-01-28T08:34:45Z")
@yrodiere Appreciated your quick response as always.
I am currently trying to replicate issue in non prod environment .
once done Ill make changes and let u know the result.
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 29, 2021, 5:51am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/8 "2021-01-29T05:51:30Z")
> [@yrodiere](#):
>
> `EntityManager entityManager`
in spring boot we have to create EntityManager from EntityManagerFactory; that way it wont work
>
I tried this configuration as well
@PersistenceContext
private EntityManager entityManager;
```
@Bean
@Transactional
```
// @Autowired
public SearchSession searchSession(/_final EntityManager entityManager_/) throws InterruptedException {
// EntityManager entityManager = entityManagerFactory.createEntityManager();
/_SearchSession searchSession = Search.session(entityManager);
if (reindex) {
searchSession.schemaManager().dropAndCreate();
searchSession.massIndexer().threadsToLoadObjects(6).startAndWait();
}_/
return Search.session(entityManager);
}
but I landed to this error
org.hibernate.search.util.common.SearchException: HSEARCH800016: Unable to access Hibernate ORM session: Session/EntityManager is closed
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 29, 2021, 6:28am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/9 "2021-01-29T06:28:58Z")
@yrodiere Same error, even after
2021-01-29 07:26:35,057 INFO be.belgiantrain.sale.service.SaleSearchServiceImpl [https-jsse-nio-8455-exec-6] Search(clazz=be.belgiantrain.sale.model.SaleSaga, arguments={salesOrder.creationDate=[date, 2020-01-26T01:00:00Z, 2021-01-29T00:59:00Z]}, tickets=null, passes=null, payments=null, saleSagas=null, salesOrders=null, items=null)
2021-01-29 07:26:35,057 INFO be.belgiantrain.sale.service.SaleSearchServiceImpl [https-jsse-nio-8455-exec-6] Range of values : 2020-01-26T01:00:00Z =\> 2021-01-29T00:59:00Z
2021-01-29 07:26:35,063 ERROR org.hibernate.AssertionFailure [https-jsse-nio-8455-exec-9] HHH000099: an assertion failure occurred (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: possible non-threadsafe access to the session
org.hibernate.AssertionFailure: possible non-threadsafe access to the session
2021-01-29 07:26:35,286 WARN org.hibernate.engine.loading.internal.LoadContexts [https-jsse-nio-8455-exec-7] HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@445dfe5b[rs=oracle.jdbc.driver.OracleResultSetImpl@21092fbb](mailto:rs=oracle.jdbc.driver.OracleResultSetImpl@21092fbb)
2021-01-29 07:26:35,287 WARN org.hibernate.engine.loading.internal.CollectionLoadContext [https-jsse-nio-8455-exec-7] HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [2] entries
2021-01-29 07:26:35,287 INFO be.belgiantrain.sale.service.SaleSearchServiceImpl [https-jsse-nio-8455-exec-7] Search(clazz=be.belgiantrain.sale.model.SaleSaga, arguments={salesOrder.creationDate=[date, 2020-01-26T01:00:00Z, 2021-01-29T00:59:00Z]}, tickets=null, passes=null, payments=null, saleSagas=null, salesOrders=null, items=null)
2021-01-29 07:26:35,287 INFO be.belgiantrain.sale.service.SaleSearchServiceImpl [https-jsse-nio-8455-exec-7] Range of values : 2020-01-26T01:00:00Z =\> 2021-01-29T00:59:00Z
2021-01-29 07:26:35,295 ERROR org.hibernate.AssertionFailure [https-jsse-nio-8455-exec-1] HHH000099: an assertion failure occurred (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: possible non-threadsafe access to the session
org.hibernate.AssertionFailure: possible non-threadsafe access to the session
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:158)
at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.performTwoPhaseLoad(AbstractRowReader.java:255)
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 29, 2021, 10:41am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/10 "2021-01-29T10:41:48Z")
this only happen we have data in result-set and with multiple threads
---
### Author:  [@gsmet](https://discourse.hibernate.org/u/gsmet)
#### Post date: [January 29, 2021, 10:54am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/11 "2021-01-29T10:54:44Z")
Am I incorrect or are you creating a global `SearchSession` bean that you reuse across threads?
If so, you cannot do that, sessions are not threadsafe.
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 29, 2021, 11:47am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/12 "2021-01-29T11:47:06Z")
@gsmet You’re correct ! let me check if it work like u asked to do so
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [January 29, 2021, 12:37pm UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/13 "2021-01-29T12:37:51Z")
> [@gsmet](#):
>
> global `SearchSession`
if not the case then how subjected entity which is not being persistent and still in transient state got to know about the change .
i.e. if entity a of session1 has some changes which is not persistent yet and same time a search request came in session2 know about this change ?
---
### Author:  [@yrodiere](https://discourse.hibernate.org/u/yrodiere)
#### Post date: [February 1, 2021, 7:42am UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/14 "2021-02-01T07:42:30Z")
> [@gsmet](#):
>
> If so, you cannot do that, sessions are not threadsafe.
Actually you can, but **only if the underlying entity manager is a proxy created by Spring 5.3+**.
@Swarnkar The [StackOverflow question](https://stackoverflow.com/questions/51827501/hibernate-search-spring-boot-java-lang-illegalstateexception-no-transactiona) you used to justify your creating of the entity manager manually is only valid with Spring 5.2 and below.
Last time I checked, when you use Hibernate Search `6.0.0.Final` and Spring 5.3+, you can just use the code I gave you.
In any case, the workaround you gave as a solution to that stackoverflow question is incorrect, since it will result in creating one global entity manager, and that just cannot work.
**Whatever you do, revert your workaround and let Spring create the entity manager**. What you did here leads you to re-use the entity manager in multiple threads, and **this will always cause the errors you’re seeing** , referring to “unsafe use of the session”.
To retrieve the `SearchSession` **with Spring 5.3+** , just use the code I gave above:
```auto
@Bean
@Autowired
public SearchSession searchSession(EntityManager entityManager) {
return Search.session(entityManager);
}
@Bean
@Autowired
public SearchMapping searchMapping(EntityManagerFactory entityManagerFactory) {
SearchMapping mapping = Search.mapping(entityManagerFactory);
if (reindex) {
mapping.scope(Object.class)
.massIndexer().dropAndCreateSchemaOnStart(true)
.threadsToLoadObjects(6).startAndWait();
}
return mapping;
}
```
To retrieve the `SearchSession` **with Spring 5.2 and below** , I think you should give up on making the SearchSession a bean. It’s possible, but requires advanced usage of Spring, way beyond the scope of the Hibernate forums.
Instead, just inject the `EntityManager` in your `SaleSearchServiceImpl`, and retrieve the `searchSession` at the very last moment, when you actually need it. Never, ever store it in a class member. I.e. do this:
```auto
public class SaleSearchServiceImpl implement SaleSearchService {
private final EntityManager entityManager;
@Autowired.
public SaleSearchServiceImpl(EntityManager entityManager) {
this.entityManager = entityManager;
}
@Override
@Transactional // You need a transaction to use the Spring-provided entityManager
public List search(String terms) {
// This SearchSession is only valid during the transaction, don't store it anywhere.
SearchSession searchSession = Search.session(entityManager);
return searchSession.search(Sale.class)
.where(f -> f.simpleQueryString().field("myField").matching(terms))
.fetchHits(20);
}
}
```
---
### Author:  [@Swarnkar](https://discourse.hibernate.org/u/Swarnkar)
#### Post date: [February 1, 2021, 1:19pm UTC](https://discourse.hibernate.org/t/hibernate-search-elastic-search-concurrency-error-log/4982/15 "2021-02-01T13:19:13Z")
> [@yrodiere](#):
>
> **and below** , I think you should give up on making the SearchSession a bean. It’s possible, but requires advanced usage of Spring, way beyond the scope of the Hibernate forums.
>
> Instead, just inject the `EntityManager`
I haven tried to move to latest version of spring but the other way it is working. Will plan if in future we have urgent fix in prod for this problem and so cant do it right now.
@yrodiere and @gsmet thanks for your quick response to move a stable build in prod in our system