Found one Java-level deadlock:
=============================
"pool-8-thread-4": 
 waiting to lock monitor 0x00007f57485793d8 (object 0x00000006268c26e0, a java.util.concurrent.ConcurrentHashMap),
  which is held by "http-bio-8080-exec-3"
"http-bio-8080-exec-3":
  waiting to lock monitor 0x00007f5766331fa8 (object 0x00000006268c2610, a java.lang.Class),
  which is held by "Thread-23"
"Thread-23":
  waiting to lock monitor 0x00007f57485793d8 (object 0x00000006268c26e0, a java.util.concurrent.ConcurrentHashMap),
  which is held by "http-bio-8080-exec-3"
 
Java stack information for the threads listed above:
===================================================
"pool-8-thread-4":
        at org.apache.kylin.metadata.cachesync.Broadcaster.getInstance(Broadcaster.java:71)
        - waiting to lock <0x00000006268c26e0> (a java.util.concurrent.ConcurrentHashMap)
        at org.apache.kylin.metadata.cachesync.AbstractCache.getBroadcaster(AbstractCache.java:36)
        at org.apache.kylin.metadata.cachesync.SingleValueCache.put(SingleValueCache.java:54)
        at org.apache.kylin.metadata.cachesync.CaseInsensitiveStringCache.put(CaseInsensitiveStringCache.java:35)
        at org.apache.kylin.cube.CubeManager.updateCubeWithRetry(CubeManager.java:427)
        at org.apache.kylin.cube.CubeManager.updateCube(CubeManager.java:338)
        at org.apache.kylin.cube.CubeManager.buildDictionary(CubeManager.java:231)
        at org.apache.kylin.cube.cli.DictionaryGeneratorCLI.processSegment(DictionaryGeneratorCLI.java:50)
        at org.apache.kylin.cube.cli.DictionaryGeneratorCLI.processSegment(DictionaryGeneratorCLI.java:41)
        at org.apache.kylin.engine.mr.steps.CreateDictionaryJob.run(CreateDictionaryJob.java:54)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.kylin.engine.mr.common.HadoopShellExecutable.doWork(HadoopShellExecutable.java:63)
        at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:113)
        at org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:57)
        at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:113)
        at org.apache.kylin.job.impl.threadpool.DefaultScheduler$JobRunner.run(DefaultScheduler.java:136)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
"http-bio-8080-exec-3":
        at org.apache.kylin.metadata.project.ProjectManager.getInstance(ProjectManager.java:60)
        - waiting to lock <0x00000006268c2610> (a java.lang.Class for org.apache.kylin.metadata.project.ProjectManager)
        at org.apache.kylin.cube.CubeManager$CubeSyncListener.onEntityChange(CubeManager.java:169)
        at org.apache.kylin.metadata.cachesync.Broadcaster.notifyListener(Broadcaster.java:213)
        - locked <0x00000006268c26e0> (a java.util.concurrent.ConcurrentHashMap)
        at org.apache.kylin.rest.service.CacheService.notifyMetadataChange(CacheService.java:115)
        at org.apache.kylin.rest.controller.CacheController.wipeCache(CacheController.java:64)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672)
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:933)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:867)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:951)
        at org.springframework.web.servlet.FrameworkServlet.doPut(FrameworkServlet.java:864)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:653)
        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:827)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:91)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:209)
        at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:244)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
        - locked <0x00000006268c3260> (a org.apache.tomcat.util.net.SocketWrapper)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:745)
"Thread-23":
        at org.apache.kylin.metadata.cachesync.Broadcaster.getInstance(Broadcaster.java:71)
        - waiting to lock <0x00000006268c26e0> (a java.util.concurrent.ConcurrentHashMap)
        at org.apache.kylin.metadata.project.ProjectManager.<init>(ProjectManager.java:96)
        at org.apache.kylin.metadata.project.ProjectManager.getInstance(ProjectManager.java:65)
        - locked <0x00000006268c2610> (a java.lang.Class for org.apache.kylin.metadata.project.ProjectManager)
        at org.apache.kylin.cube.CubeManager.updateCubeWithRetry(CubeManager.java:430)
        at org.apache.kylin.cube.CubeManager.updateCube(CubeManager.java:338)
        at org.apache.kylin.cube.CubeManager.mergeSegments(CubeManager.java:564)
        at org.apache.kylin.rest.service.CubeService.mergeCubeSegment(CubeService.java:633)
        - locked <0x00000006267998f8> (a java.lang.Class for org.apache.kylin.rest.service.CubeService)
        at org.apache.kylin.rest.service.CubeService.updateOnNewSegmentReady(CubeService.java:581)
        at org.apache.kylin.rest.service.CubeService$$FastClassBySpringCGLIB$$17a07c0e.invoke(<generated>)
        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:629)
        at org.apache.kylin.rest.service.CubeService$$EnhancerBySpringCGLIB$$4dbca366.updateOnNewSegmentReady(<generated>)
        at org.apache.kylin.rest.service.CacheService$1$1.run(CacheService.java:89)
 
Found 1 deadlock.