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https://issues.apache.org/jira/browse/AMBARI-25601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zhiguo Wu updated AMBARI-25601:
-------------------------------
Fix Version/s: 2.8.0
> Ambari with AMS HA unable to change metrics collector for metrics providing
> on collector fail
> ---------------------------------------------------------------------------------------------
>
> Key: AMBARI-25601
> URL: https://issues.apache.org/jira/browse/AMBARI-25601
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.7.5
> Reporter: Dmytro Vitiuk
> Assignee: Dmytro Grinenko
> Priority: Major
> Fix For: 2.8.0, 2.7.6
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> It is expected that ambari server should select another available metrics
> collector for metrics retrieval on current collector fail. But actually we
> have the next numerous exceptions. Of course in this case metrics are
> unavailable via ambari API.
> {code}
> 2020-12-10 08:41:44,402 ERROR [pool-3-thread-1] ambari-event-bus:232 -
> Exception thrown by subscriber method
> onMetricsCollectorHostDownEvent(org.apache.ambari.server.events.MetricsCollectorHostDownEvent)
> on subscriber
> org.apache.ambari.server.controller.metrics.MetricsCollectorHAManager@470dea54
> when dispatching event:
> MetricsCollectorHostDownEvent{eventType=METRICS_COLLECTOR_HOST_DOWN}
> java.lang.NullPointerException
> at
> org.apache.ambari.server.controller.metrics.CollectorHostDownRefreshCounter.testRefreshCounter(CollectorHostDownRefreshCounter.java:33)
> at
> org.apache.ambari.server.controller.metrics.MetricsCollectorHAClusterState.onCollectorHostDown(MetricsCollectorHAClusterState.java:117)
> at
> org.apache.ambari.server.controller.metrics.MetricsCollectorHAManager.onMetricsCollectorHostDownEvent(MetricsCollectorHAManager.java:126)
> at sun.reflect.GeneratedMethodAccessor569.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:87)
> at
> com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:144)
> at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:72)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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