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https://issues.apache.org/jira/browse/QPID-7836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16064554#comment-16064554
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ASF subversion and git services commented on QPID-7836:
-------------------------------------------------------
Commit ae54418f112eaca49d4bf9d2450776ed4f673403 in qpid-broker-j's branch
refs/heads/master from [~k-wall]
[ https://git-wip-us.apache.org/repos/asf?p=qpid-broker-j.git;h=ae54418 ]
QPID-7836: Avoid possibility of a NPE when viewing a message
> NPE logged at WARN during management view of messages whilst consumer active
> ----------------------------------------------------------------------------
>
> Key: QPID-7836
> URL: https://issues.apache.org/jira/browse/QPID-7836
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-6.1.3
> Reporter: Keith Wall
> Priority: Minor
>
> I encountered the following exception (WARN reported to logs) whilst testing
> the 6.1.3RC. The Broker survived.
> The issue is not related to changes made in 6.1.3.
> {noformat}
> 2017-06-26 17:38:58,471 ERROR [HttpManagement-HTTP-124]
> (o.a.q.s.m.p.f.ExceptionHandlingFilter) - Unexpected exception in servlet
> '/api/latest/queue/default/default/queue/getMessageInfo':
> java.lang.NullPointerException: null
> at
> org.apache.qpid.server.message.MessageInfoImpl.<init>(MessageInfoImpl.java:58)
> at
> org.apache.qpid.server.queue.AbstractQueue$MessageCollector.visit(AbstractQueue.java:3885)
> at
> org.apache.qpid.server.queue.AbstractQueue.visit(AbstractQueue.java:1886)
> at
> org.apache.qpid.server.queue.AbstractQueue.getMessageInfo(AbstractQueue.java:3757)
> at
> org.apache.qpid.server.queue.StandardQueueImplWithAccessChecking.getMessageInfo(StandardQueueImplWithAccessChecking.java:89)
> 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.ConfiguredObjectMethodOperation.perform(ConfiguredObjectMethodOperation.java:128)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.doOperation(RestServlet.java:788)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.doGetWithSubjectAndActor(RestServlet.java:376)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet$1.run(AbstractServlet.java:93)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet$1.run(AbstractServlet.java:89)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doWithSubjectAndActor(AbstractServlet.java:218)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doGet(AbstractServlet.java:87)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:575)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.service(RestServlet.java:553)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)
> at
> org.apache.qpid.server.management.plugin.filter.ForbiddingAuthorisationFilter.doFilter(ForbiddingAuthorisationFilter.java:94)
> 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.apache.qpid.server.management.plugin.filter.LoggingFilter.doFilter(LoggingFilter.java:65)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
> at
> org.apache.qpid.server.management.plugin.filter.PreemptiveSessionInvalidationFilter.doFilter(PreemptiveSessionInvalidationFilter.java:53)
> at
> org.eclipse.jetty.servlet.ServletHandler$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:748)
> {noformat}
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