[ 
https://issues.apache.org/jira/browse/QPID-8108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372775#comment-16372775
 ] 

Keith Wall commented on QPID-8108:
----------------------------------

The Broker does not yet have a well developed idea about when a child may start 
using the resources held by its parent. There are probably other places where 
the Broker is susceptible to this kind of problem.

> [Broker-J] [HTTP] NPE from SaslServlet if request arrives before Broker has 
> activated
> -------------------------------------------------------------------------------------
>
>                 Key: QPID-8108
>                 URL: https://issues.apache.org/jira/browse/QPID-8108
>             Project: Qpid
>          Issue Type: Bug
>          Components: Broker-J
>    Affects Versions: qpid-java-broker-7.0.0, qpid-java-broker-7.0.1
>            Reporter: Keith Wall
>            Priority: Minor
>
> If {{HttpPort#absoluteSessionTimeout}} has a non-zero value, if a request 
> arrives whilst the Broker is still starting the following stack trace may 
> result.   The stack trace is harmless. Once the Broker becomes ready the 
> problem no longer occurs.
> {noformat}
> 2018-02-22 18:39:42,929 ERROR [qtp1248732436-35] 
> (o.a.q.s.m.p.f.ExceptionHandlingFilter) - Unexpected exception in servlet 
> '/service/sasl':
> java.lang.NullPointerException: null
>                 at 
> org.apache.qpid.server.model.AbstractContainer.scheduleTask(AbstractContainer.java:490)
>                 at 
> org.apache.qpid.server.management.plugin.HttpManagementUtil.scheduleAbsoluteSessionTimeout(HttpManagementUtil.java:179)
>                 at 
> org.apache.qpid.server.management.plugin.HttpManagementUtil.saveAuthorisedSubject(HttpManagementUtil.java:171)
>                 at 
> org.apache.qpid.server.management.plugin.servlet.rest.SaslServlet.evaluateSaslResponse(SaslServlet.java:255)
>                 at 
> org.apache.qpid.server.management.plugin.servlet.rest.SaslServlet.doPost(SaslServlet.java:179)
>                 at 
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doPost(AbstractServlet.java:140)
>                 at 
> javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>                 at 
> javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
>                 at 
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634)
>                 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:1621)
>                 at 
> org.apache.qpid.server.management.plugin.filter.LoggingFilter.doFilter(LoggingFilter.java:63)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621)
>                 at 
> org.apache.qpid.server.management.plugin.filter.ForbiddingTraceFilter.doFilter(ForbiddingTraceFilter.java:65)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621)
>                 at 
> org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:308)
>                 at 
> org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:262)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621)
>                 at 
> org.apache.qpid.server.management.plugin.filter.ExceptionHandlingFilter.doFilter(ExceptionHandlingFilter.java:59)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:541)
>                 at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
>                 at 
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1593)
>                 at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
>                 at 
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1239)
>                 at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
>                 at 
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:481)
>                 at 
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1562)
>                 at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
>                 at 
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1141)
>                 at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>                 at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
>                 at org.eclipse.jetty.server.Server.handle(Server.java:564)
>                 at 
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
>                 at 
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
>                 at 
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
>                 at 
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110)
>                 at 
> org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
>                 at 
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672)
>                 at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590)
>                 at 
> org.apache.qpid.server.bytebuffer.QpidByteBufferFactory.lambda$null$0(QpidByteBufferFactory.java:464)
>                 at java.lang.Thread.run(Thread.java:748)
> 2018-02-22 18:39:42,931 WARN  [qtp1248732436-35] (o.e.j.s.HttpChannel) - 
> /service/sasl
> {noformat}
> The problem is that the Broker doesn't start the housekeeper until after the 
> Broker is activated.  This means there is the possibility for HTTP requests 
> to arrive between the HTTP becoming active and the Broker have completed 
> start-up.  If this happens, the NPE results and the Browser gets a 500.  
> QPID-8106 brought this problem to light,



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org
For additional commands, e-mail: dev-h...@qpid.apache.org

Reply via email to