NullPointerException: org.wildfly.extension.microprofile.metrics.MetricCollector

[timonzw]

Used WildFly: 17.0.1.Final

1. Steps to reproduce: Start WildFly

2. Deploy simple WAR with an Entity (in my case"MyEntity"), a web.xml and persistence.xml.

3. Access metrics using *hostname*:9990/metrics

Used dependencies:

<dependency>
     <groupId>org.wildfly</groupId>
     <artifactId>wildfly-parent</artifactId>
     <version>17.0.1.Final</version>
     <type>pom</type>
     <scope>import</scope>
</dependency>


<dependency>
     <groupId>javax.persistence</groupId>
     <artifactId>javax.persistence-api</artifactId>
     <version>2.2</version>
</dependency>

Error log:

11:29:02,376 ERROR [org.jboss.as.controller.management-operation] (management I/O-1) WFLYCTL0013: Operation ("read-attribute") failed - address: ([
    ("deployment" => "test-0.0.1-SNAPSHOT.war"),
    ("subsystem" => "jpa"),
    ("hibernate-persistence-unit" => "test-0.0.1-SNAPSHOT.war#my-persistence-unit"),
    ("entity-cache" => "test.MyEntity")
]): java.lang.NullPointerException
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.lambda$getCacheRegionStatistics$6(StatisticsImpl.java:633)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getCacheRegionStatistics(StatisticsImpl.java:625)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getSecondLevelCacheStatistics(StatisticsImpl.java:646)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getSecondLevelCacheStatistics(StatisticsImpl.java:32)
at [e-mail]//org.jboss.as.jpa.hibernate5.management.HibernateEntityCacheStatistics.getStatistics(HibernateEntityCacheStatistics.java:94)
at [e-mail]//org.jboss.as.jpa.hibernate5.management.HibernateEntityCacheStatistics$2.invoke(HibernateEntityCacheStatistics.java:110)
at [e-mail]//org.jboss.as.jpa.hibernate5.management.HibernateAbstractStatistics.getValue(HibernateAbstractStatistics.java:99)
at [e-mail]//org.jboss.as.jpa.management.ManagementResourceDefinition$1.handle(ManagementResourceDefinition.java:130)
at [e-mail]//org.jboss.as.jpa.management.ManagementResourceDefinition$AbstractMetricsHandler.executeRuntimeStep(ManagementResourceDefinition.java:268)
at [e-mail]//org.jboss.as.controller.AbstractRuntimeOnlyHandler$1.execute(AbstractRuntimeOnlyHandler.java:59)
at [e-mail]//org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
at [e-mail]//org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
at [e-mail]//org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
at [e-mail]//org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1412)
at [e-mail]//org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:423)
at [e-mail]//org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:243)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
at [e-mail]//org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:243)
at [e-mail]//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.executeInModelControllerCl(ModelControllerClientFactoryImpl.java:259)
at [e-mail]//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.access$300(ModelControllerClientFactoryImpl.java:114)
at [e-mail]//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient$1.run(ModelControllerClientFactoryImpl.java:152)
at [e-mail]//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient$1.run(ModelControllerClientFactoryImpl.java:147)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
at [e-mail]//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:198)
at [e-mail]//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:175)
at [e-mail]//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.executeOperation(ModelControllerClientFactoryImpl.java:147)
at [e-mail]//org.jboss.as.controller.LocalModelControllerClient.execute(LocalModelControllerClient.java:54)
at [e-mail]//org.jboss.as.controller.LocalModelControllerClient.execute(LocalModelControllerClient.java:39)
at [e-mail]//org.wildfly.extension.microprofile.metrics.MetricCollector.lambda$collectResourceMetrics0$0(MetricCollector.java:140)
at [e-mail]//org.wildfly.extension.microprofile.metrics.PrometheusCollector.collect(PrometheusCollector.java:50)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:147)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:168)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry.metricFamilySamples(CollectorRegistry.java:130)
at [e-mail]//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.handleRequest(MetricsContextService.java:100)
at [e-mail]//org.jboss.as.domain.http.server.security.RealmReadinessHandler.handleRequest(RealmReadinessHandler.java:51)
at [e-mail]//org.jboss.as.domain.http.server.security.ServerErrorReadinessHandler.handleRequest(ServerErrorReadinessHandler.java:35)
at [e-mail]//io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:91)
at [e-mail]//io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:211)
at [e-mail]//io.undertow.server.handlers.cache.CacheHandler.handleRequest(CacheHandler.java:92)
at [e-mail]//io.undertow.server.handlers.error.SimpleErrorPageHandler.handleRequest(SimpleErrorPageHandler.java:78)
at [e-mail]//io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)
at [e-mail]//org.jboss.as.domain.http.server.ManagementHttpRequestHandler.handleRequest(ManagementHttpRequestHandler.java:57)
at [e-mail]//org.jboss.as.domain.http.server.cors.CorsHttpHandler.handleRequest(CorsHttpHandler.java:75)
at [e-mail]//org.jboss.as.domain.http.server.ManagementHttpServer$UpgradeFixHandler.handleRequest(ManagementHttpServer.java:664)
at [e-mail]//io.undertow.server.Connectors.executeRootHandler(Connectors.java:364)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
at [e-mail]//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at [e-mail]//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at [e-mail]//org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
at [e-mail]//org.xnio.nio.WorkerThread.run(WorkerThread.java:591)


11:29:02,381 ERROR [io.undertow.request] (management I/O-1) UT005071: Undertow request failed HttpServerExchange{ GET /metrics}: java.lang.IllegalStateException: WFLYMETRICS0003: Unable to read attribute second-level-cache-hit-count on [
    ("subsystem" => "jpa"),
    ("hibernate-persistence-unit" => "test-0.0.1-SNAPSHOT.war#my-persistence-unit"),
    ("entity-cache" => "test.MyEntity")
]: "WFLYCTL0158: Operation handler failed: java.lang.NullPointerException".
at [e-mail]//org.wildfly.extension.microprofile.metrics.MetricCollector.lambda$collectResourceMetrics0$0(MetricCollector.java:143)
at [e-mail]//org.wildfly.extension.microprofile.metrics.PrometheusCollector.collect(PrometheusCollector.java:50)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:147)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:168)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry.metricFamilySamples(CollectorRegistry.java:130)
at [e-mail]//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.handleRequest(MetricsContextService.java:100)
at [e-mail]//org.jboss.as.domain.http.server.security.RealmReadinessHandler.handleRequest(RealmReadinessHandler.java:51)
at [e-mail]//org.jboss.as.domain.http.server.security.ServerErrorReadinessHandler.handleRequest(ServerErrorReadinessHandler.java:35)
at [e-mail]//io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:91)
at [e-mail]//io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:211)
at [e-mail]//io.undertow.server.handlers.cache.CacheHandler.handleRequest(CacheHandler.java:92)
at [e-mail]//io.undertow.server.handlers.error.SimpleErrorPageHandler.handleRequest(SimpleErrorPageHandler.java:78)
at [e-mail]//io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)
at [e-mail]//org.jboss.as.domain.http.server.ManagementHttpRequestHandler.handleRequest(ManagementHttpRequestHandler.java:57)
at [e-mail]//org.jboss.as.domain.http.server.cors.CorsHttpHandler.handleRequest(CorsHttpHandler.java:75)
at [e-mail]//org.jboss.as.domain.http.server.ManagementHttpServer$UpgradeFixHandler.handleRequest(ManagementHttpServer.java:664)
at [e-mail]//io.undertow.server.Connectors.executeRootHandler(Connectors.java:364)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
at [e-mail]//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at [e-mail]//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at [e-mail]//org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
at [e-mail]//org.xnio.nio.WorkerThread.run(WorkerThread.java:591)

Is there a way to solve this problem without activating the hibernate query cache? Respectively is this property required to resolve metrics?

Using the following persistence.xml no error is thrown:

<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.2"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">

     <persistence-unit name="my-persistence-unit">
          <properties>
               <property name="hibernate.cache.use_query_cache" value="true" />
          </properties>
     </persistence-unit>
</persistence>

Hint: The error is also reproducible with WildFly 18.0.0.Beta1, which uses Hibernate 5.3.11.Final.

[brian.stansberry]

This looks like [HHH-13505] NullPointerException thrown by StatisticsImpl#getCacheRegionStatistics - Hibernate JIRA which is fixed in WildFly 18.0.0.Beta1.

I haven't tried but using <property name="hibernate.cache.use_second_level_cache" value="false" /> instead of enabling the query cache may work around the problem.

[brian.stansberry]

Hmm, I just saw your last sentence about this being reproducible in WildFly 18.0.0.Beta1.

If you can post a stack trace showing that problem, please do as it must be different in some way.

[timonzw]

EDIT: I can confirm that setting the value for hibernate.cache.use_query_cache to true OR false the error doesn't show anymore! Neither in WildFly 17 nor in WildFly 18.

Thank you for this hint!

Here the stacktrace of WildFly 18.0.0.Beta1 (without the set of the use_query_cache property)

08:48:54,935 ERROR [org.jboss.as.controller.management-operation] (management I/O-1) WFLYCTL0013: Operation ("read-attribute") failed - address: ([
    ("deployment" => "test-0.0.1-SNAPSHOT.war"),
    ("subsystem" => "jpa"),
    ("hibernate-persistence-unit" => "test-0.0.1-SNAPSHOT.war#my-persistence-unit"),
    ("entity-cache" => "test.MyEntity")
]): java.lang.NullPointerException
at java.base/java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
at java.base/java.util.concurrent.ConcurrentHashMap.putIfAbsent(ConcurrentHashMap.java:1541)
at [e-mail]//org.hibernate.stat.internal.StatsNamedContainer.getOrCompute(StatsNamedContainer.java:57)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getCacheRegionStatistics(StatisticsImpl.java:624)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getSecondLevelCacheStatistics(StatisticsImpl.java:650)
at [e-mail]//org.hibernate.stat.internal.StatisticsImpl.getSecondLevelCacheStatistics(StatisticsImpl.java:30)
at [e-mail]1//org.jboss.as.jpa.hibernate5.management.HibernateEntityCacheStatistics.getStatistics(HibernateEntityCacheStatistics.java:94)
at [e-mail]1//org.jboss.as.jpa.hibernate5.management.HibernateEntityCacheStatistics$2.invoke(HibernateEntityCacheStatistics.java:110)
at [e-mail]1//org.jboss.as.jpa.hibernate5.management.HibernateAbstractStatistics.getValue(HibernateAbstractStatistics.java:99)
at [e-mail]1//org.jboss.as.jpa.management.ManagementResourceDefinition$1.handle(ManagementResourceDefinition.java:130)
at [e-mail]1//org.jboss.as.jpa.management.ManagementResourceDefinition$AbstractMetricsHandler.executeRuntimeStep(ManagementResourceDefinition.java:268)
at [e-mail]6//org.jboss.as.controller.AbstractRuntimeOnlyHandler$1.execute(AbstractRuntimeOnlyHandler.java:59)
at [e-mail]6//org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
at [e-mail]6//org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
at [e-mail]6//org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
at [e-mail]6//org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1413)
at [e-mail]6//org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:423)
at [e-mail]6//org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:243)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
at [e-mail]6//org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:243)
at [e-mail]6//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.executeInModelControllerCl(ModelControllerClientFactoryImpl.java:259)
at [e-mail]6//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.access$300(ModelControllerClientFactoryImpl.java:114)
at [e-mail]6//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient$1.run(ModelControllerClientFactoryImpl.java:152)
at [e-mail]6//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient$1.run(ModelControllerClientFactoryImpl.java:147)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
at [e-mail]//org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
at [e-mail]6//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:198)
at [e-mail]6//org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:175)
at [e-mail]6//org.jboss.as.controller.ModelControllerClientFactoryImpl$LocalClient.executeOperation(ModelControllerClientFactoryImpl.java:147)
at [e-mail]6//org.jboss.as.controller.LocalModelControllerClient.execute(LocalModelControllerClient.java:54)
at [e-mail]6//org.jboss.as.controller.LocalModelControllerClient.execute(LocalModelControllerClient.java:39)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricCollector.lambda$collectResourceMetrics0$0(MetricCollector.java:140)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.PrometheusCollector.collect(PrometheusCollector.java:50)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:147)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:168)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry.metricFamilySamples(CollectorRegistry.java:130)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.lambda$handleRequest$0(MetricsContextService.java:101)
at io.smallrye.metrics//io.smallrye.metrics.MetricsRequestHandler.handleRequest(MetricsRequestHandler.java:161)
at io.smallrye.metrics//io.smallrye.metrics.MetricsRequestHandler.handleRequest(MetricsRequestHandler.java:73)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.handleRequest(MetricsContextService.java:84)
at [e-mail]6//org.jboss.as.domain.http.server.security.RealmReadinessHandler.handleRequest(RealmReadinessHandler.java:51)
at [e-mail]6//org.jboss.as.domain.http.server.security.ServerErrorReadinessHandler.handleRequest(ServerErrorReadinessHandler.java:35)
at [e-mail]//io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:91)
at [e-mail]//io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:211)
at [e-mail]//io.undertow.server.handlers.cache.CacheHandler.handleRequest(CacheHandler.java:92)
at [e-mail]//io.undertow.server.handlers.error.SimpleErrorPageHandler.handleRequest(SimpleErrorPageHandler.java:78)
at [e-mail]//io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)
at [e-mail]6//org.jboss.as.domain.http.server.ManagementHttpRequestHandler.handleRequest(ManagementHttpRequestHandler.java:57)
at [e-mail]6//org.jboss.as.domain.http.server.cors.CorsHttpHandler.handleRequest(CorsHttpHandler.java:75)
at [e-mail]6//org.jboss.as.domain.http.server.ManagementHttpServer$UpgradeFixHandler.handleRequest(ManagementHttpServer.java:666)
at [e-mail]//io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
at [e-mail]//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at [e-mail]//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at [e-mail]//org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
at [e-mail]//org.xnio.nio.WorkerThread.run(WorkerThread.java:591)


08:48:54,940 ERROR [io.undertow.request] (management I/O-1) UT005071: Undertow request failed HttpServerExchange{ GET /metrics}: java.lang.IllegalStateException: WFLYMETRICS0003: Unable to read attribute second-level-cache-hit-count on [
    ("subsystem" => "jpa"),
    ("hibernate-persistence-unit" => "test-0.0.1-SNAPSHOT.war#my-persistence-unit"),
    ("entity-cache" => "test.MyEntity")
]: "WFLYCTL0158: Operation handler failed: java.lang.NullPointerException".
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricCollector.lambda$collectResourceMetrics0$0(MetricCollector.java:143)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.PrometheusCollector.collect(PrometheusCollector.java:50)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:147)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.(CollectorRegistry.java:168)
at io.prometheus.simpleclient//io.prometheus.client.CollectorRegistry.metricFamilySamples(CollectorRegistry.java:130)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.lambda$handleRequest$0(MetricsContextService.java:101)
at io.smallrye.metrics//io.smallrye.metrics.MetricsRequestHandler.handleRequest(MetricsRequestHandler.java:161)
at io.smallrye.metrics//io.smallrye.metrics.MetricsRequestHandler.handleRequest(MetricsRequestHandler.java:73)
at [e-mail]1//org.wildfly.extension.microprofile.metrics.MetricsContextService$1.handleRequest(MetricsContextService.java:84)
at [e-mail]6//org.jboss.as.domain.http.server.security.RealmReadinessHandler.handleRequest(RealmReadinessHandler.java:51)
at [e-mail]6//org.jboss.as.domain.http.server.security.ServerErrorReadinessHandler.handleRequest(ServerErrorReadinessHandler.java:35)
at [e-mail]//io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:91)
at [e-mail]//io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:211)
at [e-mail]//io.undertow.server.handlers.cache.CacheHandler.handleRequest(CacheHandler.java:92)
at [e-mail]//io.undertow.server.handlers.error.SimpleErrorPageHandler.handleRequest(SimpleErrorPageHandler.java:78)
at [e-mail]//io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)
at [e-mail]6//org.jboss.as.domain.http.server.ManagementHttpRequestHandler.handleRequest(ManagementHttpRequestHandler.java:57)
at [e-mail]6//org.jboss.as.domain.http.server.cors.CorsHttpHandler.handleRequest(CorsHttpHandler.java:75)
at [e-mail]6//org.jboss.as.domain.http.server.ManagementHttpServer$UpgradeFixHandler.handleRequest(ManagementHttpServer.java:666)
at [e-mail]//io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
at [e-mail]//io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
at [e-mail]//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at [e-mail]//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at [e-mail]//org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
at [e-mail]//org.xnio.nio.WorkerThread.run(WorkerThread.java:591)

[smarlow]

I tried to reproduce following instructions above, only I'm using WildFly master branch to test, which is using Hibernate ORM 5.3.12.Final.  Could you try again with the WildFly nightly build (should also have ORM 5.3.12)

To attempt recreating, I used a simple war with persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="1.0">
  <persistence-unit name="TEST_PU">
    <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
    <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
    <properties>
    <property name="hibernate.enhancer.enableDirtyTracking" value="true"/>
    <property name="hibernate.generate_statistics" value="true"/>
    <property name="hibernate.cache.use_second_level_cache" value="true"/>
<!--
    <property name="hibernate.cache.use_query_cache" value="true"/>
-->
    </properties>
  </persistence-unit>

 <persistence-unit name="second_PU">
    <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
    <properties>
    <property name="hibernate.enhancer.enableDirtyTracking" value="false"/>
    <property name="hibernate.generate_statistics" value="false"/>
    <property name="hibernate.cache.use_second_level_cache" value="true"/>
<!-- 
    <property name="hibernate.cache.use_query_cache" value="true"/>
-->
    </properties>
  </persistence-unit>
</persistence>

The metrics link shows results pasted to https://paste.fedoraproject.org/paste/XjpO4yC20K3~wB30uOfngw (no exceptions appeared in the WildFly console).

Thanks for reporting this!  It would be good to hear your results with ORM 5.3.12 (via nightly build link mentioned above), to verify that this bug is definitely fixed.

Scott

[smarlow]

FYI, you can also just use this link which I used, to download a recent build (I verified that ORM 5.3.12 is inside), just login as guest after clicking on https://ci.wildfly.org/repository/download/WF_Nightly/168928:id/wildfly-18.0.0.Final-SNAPSHOT.zip

[timonzw]

With your provided version (18.0.0.Final-SNAPSHOT) the metrics are displayed/provided, but I still get some errors and warnings in the WildFly log - no matter whether my persistence.xml is pretty empty or whether I use your configuration which. In both scenarios the log looks pretty much the same:

https://paste.fedoraproject.org/paste/x5nFzj1dJH24lJsLv34brQ

https://paste.fedoraproject.org/paste/u8wmpJR3Ldz1W-D186~Lgg

Hopefully there is no wrong or missing configuration in my project, but beside of an entity, a maven dependency to javax.persistence.javax.persistence-api:2.2, a simple web.xml and a persistence.xml there is nothing else.

[smarlow]

Gail created a Hibernate tracking issue for the NPE, issue link is https://hibernate.atlassian.net/browse/HHH-13645.

Gail also created a pull request for the NPE as well, link is https://github.com/hibernate/hibernate-orm/pull/3049.

Scott

[timonzw]

Thank you for the information and your support!

[jfisherdev]

Just confirming in case it was not already, I observed this is present in the 18.0.0.Final release, since it has 5.3.12 but the fix appears to be in 5.3.13.

I too was able to work around it by explicitly configuring the hibernate.cache.use_query_cache property in persistence.xml as noted.

Thank you.