Error while dispatching observation events for //*[11111b]@org.apache.sling.jcr.resource.internal.JcrResourceListener java.lang.IllegalStateException: Resource resolver is already closed

[rvk80]

After installing Service Pack 6.5.9 the following warning is logged quite often:

18.08.2021 14:43:23.068 *WARN* [sling-oak-observation-5] org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor Error while dispatching observation events for //*[11111b]@org.apache.sling.jcr.resource.internal.JcrResourceListener
java.lang.IllegalStateException: Resource resolver is already closed.
	at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.checkClosed(ResourceResolverImpl.java:191) [org.apache.sling.resourceresolver:1.7.2]
	at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.getResource(ResourceResolverImpl.java:442) [org.apache.sling.resourceresolver:1.7.2]
	at org.apache.sling.resourceresolver.impl.mapping.MapEntries.addResource(MapEntries.java:257) [org.apache.sling.resourceresolver:1.7.2]
	at org.apache.sling.resourceresolver.impl.mapping.MapEntries.onChange(MapEntries.java:732) [org.apache.sling.resourceresolver:1.7.2]
	at org.apache.sling.resourceresolver.impl.observation.BasicObservationReporter.reportChanges(BasicObservationReporter.java:211) [org.apache.sling.resourceresolver:1.7.2]
	at org.apache.sling.jcr.resource.internal.JcrResourceListener.onEvent(JcrResourceListener.java:155) [org.apache.sling.jcr.resource:3.0.18]
	at org.apache.jackrabbit.commons.observation.ListenerTracker$1.onEvent(ListenerTracker.java:190) [org.apache.jackrabbit.jackrabbit-jcr-commons:2.20.2]
	at org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor.contentChanged(ChangeProcessor.java:513) [org.apache.jackrabbit.oak-jcr:1.22.7]
	at org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher.contentChanged(FilteringDispatcher.java:52) [org.apache.jackrabbit.oak-core:1.22.7]
	at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:127) [org.apache.jackrabbit.oak-store-spi:1.22.7]
	at org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:121) [org.apache.jackrabbit.oak-store-spi:1.22.7]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

Other than filling up the logs there does not seem to be a functional impact.

Is there something we can do to prevent these warnings?

[Asutosh_Jena_ · Accepted solution]

Hi @rvk80 

This will not have any functional Impact. But if you want to suppress it, just create a logger configuration with level as "Error" and add the below config. It will be suppressed.

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="sling:OsgiConfig"
    org.apache.sling.commons.log.file="logs/suppress.log"
    org.apache.sling.commons.log.level="error"
    org.apache.sling.commons.log.names="[org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor]"
    org.apache.sling.commons.log.pattern="\{0,date,dd.MM.yyyy HH:mm:ss.SSS} *{4}* [{2}] {3} {5}"/>

Highlighted one is the class form where you get the warning and can be updated with any class name you want to suppress.

Thanks!