yarn - hadoop ReentrantReadWriteLock -


my resourcemanager process crash, , found 78 threads 'parking wait <0x00000005a3abb250>', , no thread held object 0x00000005a3abb250.

what hapend?

"658922022@qtp-1157567439-10404" daemon prio=10 tid=0x00007fde30737000 nid=0x305a waiting on condition [0x00007fde3763d000]    java.lang.thread.state: waiting (parking)     @ sun.misc.unsafe.park(native method)     - parking wait  <0x00000005a3abb250> (a java.util.concurrent.locks.reentrantreadwritelock$nonfairsync)     @ java.util.concurrent.locks.locksupport.park(locksupport.java:186)     @ java.util.concurrent.locks.abstractqueuedsynchronizer.parkandcheckinterrupt(abstractqueuedsynchronizer.java:834)     @ java.util.concurrent.locks.abstractqueuedsynchronizer.doacquireshared(abstractqueuedsynchronizer.java:964)     @ java.util.concurrent.locks.abstractqueuedsynchronizer.acquireshared(abstractqueuedsynchronizer.java:1282)     @ java.util.concurrent.locks.reentrantreadwritelock$readlock.lock(reentrantreadwritelock.java:731)     @ org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.rmappattemptimpl.gettrackingurl(rmappattemptimpl.java:480)     @ org.apache.hadoop.yarn.server.resourcemanager.rmapp.rmappimpl.gettrackingurl(rmappimpl.java:602)     @ org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.appinfo.<init>(appinfo.java:89)     @ org.apache.hadoop.yarn.server.resourcemanager.webapp.appsblock.render(appsblock.java:86)     @ org.apache.hadoop.yarn.webapp.view.htmlblock.render(htmlblock.java:66)     @ org.apache.hadoop.yarn.webapp.view.htmlblock.renderpartial(htmlblock.java:76)     @ org.apache.hadoop.yarn.webapp.view.render(view.java:235)     @ org.apache.hadoop.yarn.webapp.view.htmlblock$block.subview(htmlblock.java:40)     @ org.apache.hadoop.yarn.webapp.hamlet.hamlet._(hamlet.java:30347)     @ org.apache.hadoop.yarn.server.resourcemanager.webapp.appsblockwithmetrics.render(appsblockwithmetrics.java:29)     @ org.apache.hadoop.yarn.webapp.view.htmlblock.render(htmlblock.java:66)     @ org.apache.hadoop.yarn.webapp.view.htmlblock.renderpartial(htmlblock.java:76)     @ org.apache.hadoop.yarn.webapp.view.render(view.java:235)     @ org.apache.hadoop.yarn.webapp.view.htmlpage$page.subview(htmlpage.java:49)     @ org.apache.hadoop.yarn.webapp.hamlet.hamletimpl$eimp._v(hamletimpl.java:117)     @ org.apache.hadoop.yarn.webapp.hamlet.hamlet$td._(hamlet.java:845)     @ org.apache.hadoop.yarn.webapp.view.twocolumnlayout.render(twocolumnlayout.java:56)     @ org.apache.hadoop.yarn.webapp.view.htmlpage.render(htmlpage.java:82)     @ org.apache.hadoop.yarn.webapp.dispatcher.render(dispatcher.java:197)     @ org.apache.hadoop.yarn.webapp.dispatcher.service(dispatcher.java:156)     @ javax.servlet.http.httpservlet.service(httpservlet.java:820)     @ com.google.inject.servlet.servletdefinition.doservice(servletdefinition.java:263)     @ com.google.inject.servlet.servletdefinition.service(servletdefinition.java:178)     @ com.google.inject.servlet.managedservletpipeline.service(managedservletpipeline.java:91)     @ com.google.inject.servlet.filterchaininvocation.dofilter(filterchaininvocation.java:62)     @ com.sun.jersey.spi.container.servlet.servletcontainer.dofilter(servletcontainer.java:900)     @ com.sun.jersey.spi.container.servlet.servletcontainer.dofilter(servletcontainer.java:834)     @ org.apache.hadoop.yarn.server.resourcemanager.webapp.rmwebappfilter.dofilter(rmwebappfilter.java:84)     @ com.sun.jersey.spi.container.servlet.servletcontainer.dofilter(servletcontainer.java:795)     @ com.google.inject.servlet.filterdefinition.dofilter(filterdefinition.java:163)     @ com.google.inject.servlet.filterchaininvocation.dofilter(filterchaininvocation.java:58)     @ com.google.inject.servlet.managedfilterpipeline.dispatch(managedfilterpipeline.java:118)     @ com.google.inject.servlet.guicefilter.dofilter(guicefilter.java:113)     @ org.mortbay.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1212)     @ org.apache.hadoop.http.lib.staticuserwebfilter$staticuserfilter.dofilter(staticuserwebfilter.java:109)     @ org.mortbay.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1212)     @ org.apache.hadoop.http.httpserver2$quotinginputfilter.dofilter(httpserver2.java:1183)     @ org.mortbay.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1212)     @ org.apache.hadoop.http.nocachefilter.dofilter(nocachefilter.java:45)     @ org.mortbay.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1212)     @ org.apache.hadoop.http.nocachefilter.dofilter(nocachefilter.java:45)     @ org.mortbay.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1212)     @ org.mortbay.jetty.servlet.servlethandler.handle(servlethandler.java:399)     @ org.mortbay.jetty.security.securityhandler.handle(securityhandler.java:216)     @ org.mortbay.jetty.servlet.sessionhandler.handle(sessionhandler.java:182)     @ org.mortbay.jetty.handler.contexthandler.handle(contexthandler.java:766)     @ org.mortbay.jetty.webapp.webappcontext.handle(webappcontext.java:450)     @ org.mortbay.jetty.handler.contexthandlercollection.handle(contexthandlercollection.java:230)     @ org.mortbay.jetty.handler.handlerwrapper.handle(handlerwrapper.java:152)     @ org.mortbay.jetty.server.handle(server.java:326)     @ org.mortbay.jetty.httpconnection.handlerequest(httpconnection.java:542)     @ org.mortbay.jetty.httpconnection$requesthandler.headercomplete(httpconnection.java:928)     @ org.mortbay.jetty.httpparser.parsenext(httpparser.java:549)     @ org.mortbay.jetty.httpparser.parseavailable(httpparser.java:212)     @ org.mortbay.jetty.httpconnection.handle(httpconnection.java:404)     @ org.mortbay.io.nio.selectchannelendpoint.run(selectchannelendpoint.java:410)     @ org.mortbay.thread.queuedthreadpool$poolthread.run(queuedthreadpool.java:582)


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