José Andrés Cordero Benítez created OAK-8656:
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Summary: ListenerStatsData.toCompositeData() throws NPE
Key: OAK-8656
URL: https://issues.apache.org/jira/browse/OAK-8656
Project: Jackrabbit Oak
Issue Type: Bug
Components: documentmk
Reporter: José Andrés Cordero Benítez
Seen recently in an oak-sprout build.
{noformat}
20.08.2019 17:06:17.206 *WARN*
[sling-default-3-health-com.adobe.granite.repository.hc.impl.ObservationQueueLengthHealthCheck]
com.adobe.granite.repository.hc.impl.ObservationQueueLengthHealthCheck
Exception while getting mBean property: ListenerStats
javax.management.RuntimeMBeanException: java.lang.NullPointerException
at
java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:829)
at
java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrowMaybeMBeanException(DefaultMBeanServerInterceptor.java:842)
at
java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:645)
at
java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
at
com.adobe.granite.repository.hc.impl.ObservationQueueLengthHealthCheck.getTabularData(ObservationQueueLengthHealthCheck.java:250)
at
com.adobe.granite.repository.hc.impl.ObservationQueueLengthHealthCheck.checkEventListenerStats(ObservationQueueLengthHealthCheck.java:110)
at
com.adobe.granite.repository.hc.impl.ObservationQueueLengthHealthCheck.execute(ObservationQueueLengthHealthCheck.java:83)
at
com.adobe.granite.queries.impl.hc.QueryHealthCheckMetrics$LazyGauge.execute(QueryHealthCheckMetrics.java:257)
[com.adobe.granite.queries:1.0.70]
at
com.adobe.granite.queries.impl.hc.QueryHealthCheckMetrics$LazyGauge.lambda$new$0(QueryHealthCheckMetrics.java:244)
[com.adobe.granite.queries:1.0.70]
at
org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:347)
[org.apache.sling.commons.scheduler:2.7.2]
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
[org.apache.sling.commons.scheduler:2.7.2]
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NullPointerException: null
at
org.apache.jackrabbit.oak.jcr.observation.ConsolidatedListenerMBeanImpl$ListenerStatsData.toCompositeData(ConsolidatedListenerMBeanImpl.java:423)
[org.apache.jackrabbit.oak-jcr:1.18.0.SNAPSHOT]
at
org.apache.jackrabbit.oak.jcr.observation.ConsolidatedListenerMBeanImpl.getListenerStats(ConsolidatedListenerMBeanImpl.java:119)
[org.apache.jackrabbit.oak-jcr:1.18.0.SNAPSHOT]
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at jdk.internal.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at java.base/sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:260)
at
java.management/com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
at
java.management/com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
at
java.management/com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
at
java.management/com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83)
at
java.management/com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206)
at
java.management/javax.management.StandardMBean.getAttribute(StandardMBean.java:372)
at
java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:641)
... 11 common frames omitted{noformat}
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