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https://issues.apache.org/jira/browse/KARAF-6146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16764339#comment-16764339
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ASF GitHub Bot commented on KARAF-6146:
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jbonofre commented on pull request #71: [KARAF-6146] Fix potential NPE in
alerter
URL: https://github.com/apache/karaf-decanter/pull/71
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> Decanter log alerter throws a NuullPointerException
> ---------------------------------------------------
>
> Key: KARAF-6146
> URL: https://issues.apache.org/jira/browse/KARAF-6146
> Project: Karaf
> Issue Type: Bug
> Components: decanter
> Affects Versions: decanter-2.1.0
> Reporter: Jean-Baptiste Onofré
> Assignee: Jean-Baptiste Onofré
> Priority: Major
> Fix For: decanter-2.2.0
>
>
> When using the Decanter log alerter (mainly for demo or test), it throws a
> {{NullPointerException}} when an alert is displayed:
> {code}
> 07:42:00.641 WARN [EventAdminAsyncThread #7] EventAdmin: Exception during
> event dispatch [org.osgi.service.event.Event [topic=decanter/alert/warn]
> {hostName=precision, alertPattern=range:[0,10),
> felix.fileinstall.filename=file:/home/jbonofre/Downloads/apache-karaf-4.2.1/etc/org.apache.karaf.decanter.collector.jmx-local.cfg,
> CurrentThreadCpuTimeSupported=true, CurrentThreadUserTime=10000000,
> PeakThreadCount=133, type=jmx-local,
> service.factoryPid=org.apache.karaf.decanter.collector.jmx,
> decanter.collector.name=jmx, scheduler.period=60,
> ThreadCpuTimeSupported=true, scheduler.concurrent=false, component.id=10,
> karafName=root, host=null, scheduler.name=decanter-collector-jmx,
> alertAttribute=ThreadCount, DaemonThreadCount=57, timestamp=1549694520576,
> ThreadAllocatedMemorySupported=true, ThreadContentionMonitoringEnabled=false,
> component.name=org.apache.karaf.decanter.collector.jmx,
> TotalStartedThreadCount=208, alertLevel=warn, AllThreadIds=[J@bb4618e,
> ThreadAllocatedMemoryEnabled=true, CurrentThreadCpuTime=25464364, url=local,
> ObjectName=java.lang:type=Threading,
> service.pid=org.apache.karaf.decanter.collector.jmx.fc1deb09-fca8-4d94-a0ab-456a0cab62d2,
> ThreadContentionMonitoringSupported=true, ThreadCount=105,
> alertBackToNormal=false, ThreadCpuTimeEnabled=true,
> ObjectMonitorUsageSupported=true, hostAddress=127.0.0.1,
> SynchronizerUsageSupported=true} | [org.osgi.service.event.EventHandler] |
> Bundle(org.apache.karaf.decanter.alerting.log [94])]
> java.lang.NullPointerException: null
> at
> org.apache.karaf.decanter.alerting.log.Logger.handleEvent(Logger.java:38)
> ~[?:?]
> at
> org.apache.felix.eventadmin.impl.handler.EventHandlerProxy.sendEvent(EventHandlerProxy.java:415)
> [3:org.apache.karaf.services.eventadmin:4.2.1]
> at
> org.apache.felix.eventadmin.impl.tasks.HandlerTask.runWithoutBlacklistTiming(HandlerTask.java:82)
> [3:org.apache.karaf.services.eventadmin:4.2.1]
> at
> org.apache.felix.eventadmin.impl.tasks.SyncDeliverTasks.execute(SyncDeliverTasks.java:104)
> [3:org.apache.karaf.services.eventadmin:4.2.1]
> at
> org.apache.felix.eventadmin.impl.tasks.AsyncDeliverTasks$TaskExecuter.run(AsyncDeliverTasks.java:166)
> [3:org.apache.karaf.services.eventadmin:4.2.1]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:?]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> [?:?]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [?:?]
> at java.lang.Thread.run(Thread.java:748) [?:?]
> {code}
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