Confluence can degrade if Jira is unresponsive due to gadget feed retrieval requests

 171 threaddump-node6/sync_threads.1544641605.txt-   java.lang.Thread.State: WAITING (parking)
  14 threaddump-node6/sync_threads.1544641605.txt-   java.lang.Thread.State: RUNNABLE

"http-nio-8090-exec-4766" #210557 daemon prio=5 os_prio=0 tid=0x00007fefbc25e800 nid=0xf080 runnable [0x00007fee4066e000]
   java.lang.Thread.State: RUNNABLE
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
...
	at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.getGadgetSpec(DefaultGadgetSpecFactory.java:91)
	at com.atlassian.gadgets.renderer.internal.local.LocalGadgetSpecFactory.getGadgetSpec(LocalGadgetSpecFactory.java:80)
	at com.atlassian.gadgets.renderer.internal.local.LocalGadgetSpecFactory.getGadgetSpec(LocalGadgetSpecFactory.java:59)
	at com.atlassian.gadgets.renderer.internal.GadgetSpecFactoryImpl.getGadgetSpec(GadgetSpecFactoryImpl.java:128)
	at com.atlassian.gadgets.renderer.internal.GadgetSpecFactoryImpl.getGadgetSpec(GadgetSpecFactoryImpl.java:79)
...
	at com.atlassian.confluence.plugins.gadgets.GadgetMacro.getViewType(GadgetMacro.java:460)
	at com.atlassian.confluence.plugins.gadgets.GadgetMacro.getGadgetView(GadgetMacro.java:436)
	at com.atlassian.confluence.plugins.gadgets.GadgetMacro.generateMacroDiv(GadgetMacro.java:190)
	at com.atlassian.confluence.plugins.gadgets.GadgetMacro.renderGadget(GadgetMacro.java:172)
	at com.atlassian.confluence.plugins.gadgets.GadgetMacro.execute(GadgetMacro.java:157)
	at com.atlassian.confluence.content.render.xhtml.view.macro.ViewMacroMarshaller.executeMacro(ViewMacroMarshaller.java:273)
	at com.atlassian.confluence.pages.actions.ViewPageAction.execute(ViewPageAction.java:270)

[ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread "ajp-nio-127.0.0.1-8009-exec-412 url:/plugins/macrob...owse-macros.action" (id=xxx) has been active for 60,733 milliseconds (since 4/22/20 9:29 AM) to serve the same request for https://test/plugins/macrobrowser/browse-macros.action?detailed=false&macroMetadataClientCacheKey=1587562106899 and may be stuck (configured threshold for this StuckThreadDetectionValve is 60 seconds). There is/are 252 thread(s) in total that are monitored by this Valve and may be stuck.
 java.lang.Throwable
	at sun.misc.Unsafe.park(Native Method)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
	at org.codehaus.httpcache4j.cache.Mutex.acquire(Mutex.java:45)
	at org.codehaus.httpcache4j.cache.HTTPCache.doCachedRequest(HTTPCache.java:103)
	at org.codehaus.httpcache4j.cache.HTTPCache.doCachedRequest(HTTPCache.java:80)
	at com.atlassian.gadgets.directory.internal.impl.GadgetFeedReaderImpl.<init>(GadgetFeedReaderImpl.java:43)
	at com.atlassian.gadgets.directory.internal.impl.GadgetFeedReaderFactoryImpl.getFeedReader(GadgetFeedReaderFactoryImpl.java:28)
	at sun.reflect.GeneratedMethodAccessor949.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:56)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:60)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:70)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:53)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:57)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
	at com.sun.proxy.$Proxy2053.getFeedReader(Unknown Source)
	at com.atlassian.confluence.plugins.gadgets.metadata.GadgetsMacroMetadataProvider.getUrisFromFeedStore(GadgetsMacroMetadataProvider.java:243)