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https://issues.apache.org/jira/browse/QPID-8748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18100681#comment-18100681
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ASF GitHub Bot commented on QPID-8748:
--------------------------------------
dakirily opened a new pull request, #422:
URL: https://github.com/apache/qpid-broker-j/pull/422
This PR addresses
[QPID-8748](https://issues.apache.org/jira/browse/QPID-8748), disabling default
query engine caching.
> [Broker-J] NPE when sorting results in broker query engine
> ----------------------------------------------------------
>
> Key: QPID-8748
> URL: https://issues.apache.org/jira/browse/QPID-8748
> Project: Qpid
> Issue Type: Bug
> Components: Broker-J
> Affects Versions: qpid-java-broker-10.0.1
> Reporter: Daniil Kirilyuk
> Priority: Minor
> Fix For: qpid-java-broker-10.1.0
>
>
> Under certain circumstances broker produces following stacktrace when calling
> REST API:
> {code:java}
> 2025-11-24T15:06:10,165Z ERROR [qtp701866202-5313]
> (o.a.q.s.m.p.s.r.QueryServlet) - Error when executing query
> java.util.ConcurrentModificationException: null
> at
> java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1013)
> at java.base/java.util.ArrayList$Itr.next(ArrayList.java:967)
> at
> org.apache.qpid.server.query.engine.evaluator.QueryEvaluator.sortResult(QueryEvaluator.java:317)
> at
> org.apache.qpid.server.query.engine.evaluator.QueryEvaluator.evaluate(QueryEvaluator.java:253)
> at
> org.apache.qpid.server.query.engine.evaluator.QueryEvaluator.execute(QueryEvaluator.java:213)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.QueryServlet.doPost(QueryServlet.java:115)
> at
> org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doPost(AbstractServlet.java:155)
> at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:520)
> at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:587)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)
> at
> org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)
> at
> org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.lambda$doFilterChainAs$1(AuthenticationCheckFilter.java:155)
> at
> java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
> at java.base/javax.security.auth.Subject.doAs(Subject.java:439)
> at
> org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilterChainAs(AuthenticationCheckFilter.java:153)
> at
> org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilter(AuthenticationCheckFilter.java:123)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
> at
> org.apache.qpid.server.management.plugin.filter.LoggingFilter.doFilter(LoggingFilter.java:63)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
> at
> org.apache.qpid.server.management.plugin.filter.MethodFilter.doFilter(MethodFilter.java:67)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
> at
> org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:314)
> at
> org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:267)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
> at
> org.apache.qpid.server.management.plugin.filter.ExceptionHandlingFilter.doFilter(ExceptionHandlingFilter.java:59)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1580)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1381)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1553)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1303)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
> at org.eclipse.jetty.server.Server.handle(Server.java:563)
> at
> org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598)
> at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:287)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
> at
> org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
> at
> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421)
> at
> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390)
> at
> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277)
> at
> org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)
> at
> org.apache.qpid.server.bytebuffer.QpidByteBufferFactory.lambda$createQpidByteBufferTrackingThreadFactory$0(QpidByteBufferFactory.java:464)
> at java.base/java.lang.Thread.run(Thread.java:840) {code}
>
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