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Posted to dev@qpid.apache.org by "Rob Godfrey (JIRA)" <ji...@apache.org> on 2017/04/18 11:47:41 UTC
[jira] [Commented] (QPID-7750) [Java Broker] NPE in
AbstractQueue#getOldestMessageArrivalTime when Queue was not opened
[ https://issues.apache.org/jira/browse/QPID-7750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15972535#comment-15972535 ]
Rob Godfrey commented on QPID-7750:
-----------------------------------
So I think the core issue here is that requests on objects that are not opened should probably result in some sort of error, rather than actually being processed... however obviously the NPE should be fixed anyway
> [Java Broker] NPE in AbstractQueue#getOldestMessageArrivalTime when Queue was not opened
> ----------------------------------------------------------------------------------------
>
> Key: QPID-7750
> URL: https://issues.apache.org/jira/browse/QPID-7750
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-broker-7.0.0
> Reporter: Lorenz Quack
>
> There is a possibility of a NullPointerException in {{AbstractQueue#getOldestMessageArrivalTime}} when the queue has not been opened the entry list is {{null}}:
> {noformat}
> 2017-04-18 11:11:45,817 ERROR [HttpManagement-https-124] (o.a.q.s.m.p.f.ExceptionHandlingFilter) - Unexpected exception in servlet '/api/latest/virtualhost/default/default':
> java.lang.NullPointerException: null
> at org.apache.qpid.server.queue.AbstractQueue.getOldestMessageArrivalTime(AbstractQueue.java:1406)
> at org.apache.qpid.server.queue.AbstractQueue.getOldestMessageAge(AbstractQueue.java:1444)
> 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.apache.qpid.server.model.ConfiguredObjectMethodAttributeOrStatistic.getValue(ConfiguredObjectMethodAttributeOrStatistic.java:68)
> at org.apache.qpid.server.model.ConfiguredObjectMethodStatistic.getValue(ConfiguredObjectMethodStatistic.java:26)
> at org.apache.qpid.server.model.AbstractConfiguredObject.getStatistics(AbstractConfiguredObject.java:3159)
> at org.apache.qpid.server.queue.StandardQueueImplWithAccessChecking.getStatistics(StandardQueueImplWithAccessChecking.java:46)
> at org.apache.qpid.server.model.AbstractConfiguredObject.getStatistics(AbstractConfiguredObject.java:3146)
> at org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.incorporateStatisticsIntoMap(ConfiguredObjectToMapConverter.java:218)
> at org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.convertObjectToMap(ConfiguredObjectToMapConverter.java:65)
> at org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.incorporateChildrenIntoMap(ConfiguredObjectToMapConverter.java:271)
> at org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.convertObjectToMap(ConfiguredObjectToMapConverter.java:69)
> at org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.doGet(RestServlet.java:303)
> at org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doGet(AbstractServlet.java:123)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:575)
> at org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.service(RestServlet.java:396)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)
> at org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter$1.run(AuthenticationCheckFilter.java:157)
> at org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter$1.run(AuthenticationCheckFilter.java:153)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilterChainAs(AuthenticationCheckFilter.java:152)
> at org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilter(AuthenticationCheckFilter.java:122)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at org.apache.qpid.server.management.plugin.filter.LoggingFilter.doFilter(LoggingFilter.java:63)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at org.apache.qpid.server.management.plugin.filter.ForbiddingTraceFilter.doFilter(ForbiddingTraceFilter.java:65)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:247)
> at org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:210)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at org.apache.qpid.server.management.plugin.filter.ExceptionHandlingFilter.doFilter(ExceptionHandlingFilter.java:59)
> at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)
> at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
> at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
> at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
> at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:370)
> at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
> at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971)
> at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
> at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
> at org.eclipse.jetty.io.nio.SslConnection.handle(SslConnection.java:196)
> at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
> at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
> at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> I'm not entirely sure what the events were leading up to the error. It might be a race between the broker starting up / shutting down and a browser making a request.
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