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https://issues.apache.org/jira/browse/YARN-7266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16779068#comment-16779068
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Prabhu Joseph commented on YARN-7266:
-------------------------------------
[~eyang] Thanks for the review.
1. Placed jaxb.properties inside src/main/resources and which gets placed
correctly in the same location as class file after build.
2. Fixed double checking locking issue using volatile. Synchronization on
createContext method will again lead to http server threads getting blocked.
Please let me know if i misunderstand your comment.
> 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: ATSv2, timelineserver
> Affects Versions: 2.7.3
> Reporter: Venkata Puneet Ravuri
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-7266-0005.patch, YARN-7266-001.patch,
> YARN-7266-002.patch, YARN-7266-003.patch, YARN-7266-004.patch
>
>
> 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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