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https://issues.apache.org/jira/browse/YARN-7266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16771982#comment-16771982
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Prabhu Joseph commented on YARN-7266:
-------------------------------------
The http threads in problematic jstack creates a new {{JAXBContextImpl}}
everytime while accepting the http request which causes the synchronization
issue.
Have below two ways to explore:
1. Implement a custom Jaxb context factory (javax.xml.bind.context.factory)
which reuses the {{JAXBContextImpl}}. The default {{ContextFactory}} creates a
new {{JAXBContextImpl}} every time.
2. Check if Jersey has a way to reuse {{JAXBContextImpl}} / Jersey
{{JSONJAXBContext}} while accepting http request in similar to what it does
when writing response through {{ContextResolver}} ({{JAXBContextResolver}} /
{{YarnJacksonJaxbJsonProvider}})
Issue is applicable for other Webservices like RM, AM. This affects ATSV2
Timeline Reader WebService.
> Timeline Server event handler threads locked
> --------------------------------------------
>
> Key: YARN-7266
> URL: https://issues.apache.org/jira/browse/YARN-7266
> Project: Hadoop YARN
> Issue Type: Bug
> Components: timelineserver
> Affects Versions: 2.7.3
> Reporter: Venkata Puneet Ravuri
> Assignee: Prabhu Joseph
> Priority: Major
>
> Event handlers for Timeline Server seem to take a lock while parsing HTTP
> headers of the request. This is causing all other threads to wait and slowing
> down the overall performance of Timeline server. We have resourcemanager
> metrics enabled to send to timeline server. Because of the high load on
> ResourceManager, the metrics to be sent are getting backlogged and in turn
> increasing heap footprint of Resource Manager (due to pending metrics).
> This is the complete stack trace of a blocked thread on timeline server:-
> "2079644967@qtp-1658980982-4560" #4632 daemon prio=5 os_prio=0
> tid=0x00007f6ba490a000 nid=0x5eb waiting for monitor entry
> [0x00007f6b9142c000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:82)
> - waiting to lock <0x00000005c0621860> (a java.lang.Class for
> com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector)
> at
> com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:168)
> at
> com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:282)
> at
> com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:94)
> at sun.reflect.GeneratedConstructorAccessor52.newInstance(Unknown
> Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
> Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at
> com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:128)
> at
> com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:183)
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:532)
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:551)
> at
> com.sun.xml.bind.v2.runtime.property.ArrayElementProperty.<init>(ArrayElementProperty.java:112)
> at
> com.sun.xml.bind.v2.runtime.property.ArrayElementNodeProperty.<init>(ArrayElementNodeProperty.java:62)
> at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown
> Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
> Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at
> com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:128)
> at
> com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:183)
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:532)
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:347)
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1170)
> at
> com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:145)
> at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
> at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
> at javax.xml.bind.ContextFinder.find(Unknown Source)
> at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
> at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
> at
> com.sun.jersey.server.wadl.generators.WadlGeneratorJAXBGrammarGenerator.buildModelAndSchemas(WadlGeneratorJAXBGrammarGenerator.java:412)
> at
> com.sun.jersey.server.wadl.generators.WadlGeneratorJAXBGrammarGenerator.createExternalGrammar(WadlGeneratorJAXBGrammarGenerator.java:352)
> at
> com.sun.jersey.server.wadl.WadlBuilder.generate(WadlBuilder.java:115)
> at
> com.sun.jersey.server.impl.wadl.WadlApplicationContextImpl.getApplication(WadlApplicationContextImpl.java:104)
> at
> com.sun.jersey.server.impl.wadl.WadlApplicationContextImpl.getApplication(WadlApplicationContextImpl.java:120)
> at
> com.sun.jersey.server.impl.wadl.WadlMethodFactory$WadlOptionsMethodDispatcher.dispatch(WadlMethodFactory.java:98)
> at
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
> at
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> at
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:886)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:834)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:795)
> at
> com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163)
> at
> com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
> at
> com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
> at
> com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:96)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:594)
> at
> org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter.doFilter(DelegationTokenAuthenticationFilter.java:291)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:553)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.security.http.CrossOriginFilter.doFilter(CrossOriginFilter.java:95)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1243)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
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