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https://issues.apache.org/jira/browse/AMQ-9481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17837118#comment-17837118
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Jean-Baptiste Onofré commented on AMQ-9481:
-------------------------------------------
This is due to the move from Jetty Continuation to AsyncRequestServlet. Let me
check with.
> Concurrent access error attempting to consume messages via REST API in 5.18.2
> or higher
> ---------------------------------------------------------------------------------------
>
> Key: AMQ-9481
> URL: https://issues.apache.org/jira/browse/AMQ-9481
> Project: ActiveMQ Classic
> Issue Type: Bug
> Affects Versions: 5.18.2, 5.18.3, 5.18.4
> Reporter: Andrew Smith
> Assignee: Jean-Baptiste Onofré
> Priority: Major
> Fix For: 5.18.5, 6.1.3
>
>
> I am attempting to download a file from a queue via PowerShell. This can be
> done with the following 4 lines:
> {code:java}
> $user="admin"
> $pass="admin" | ConvertTo-SecureString -AsPlainText -Force
> $cred = New-Object Management.Automation.PSCredential($user,$pass)
> $status = Invoke-WebRequest -Uri
> "http://localhost:8161/api/message/TestQueue?type=queue&clientId=Importer";
> -Credential $cred -ContentType "application/base64"{code}
> When I do this using 5.18.1, it works and either downloads a file or times
> out after a short period if there are no files on the queue. When I run the
> same script against 5.18.2 or higher, I get the following error the first
> time I try to download a file after starting the broker:
> {noformat}
> Invoke-WebRequest : HTTP ERROR 500 AsyncContext timeout
> URI:/api/message/TestQueue
> STATUS:500
> MESSAGE:AsyncContext timeout
> SERVLET:MessageServlet
> At line:1 char:11
> + $status = Invoke-WebRequest -Uri "http://localhost:8161/api/message/T ...
> + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + CategoryInfo : InvalidOperation:
> (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
> eption
> + FullyQualifiedErrorId :
> WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand{noformat}
> Then every time I try after that I get the following:
> {noformat}
> Invoke-WebRequest : HTTP ERROR 500 javax.servlet.ServletException:
> javax.servlet.ServletException:
> javax.servlet.ServletException: Concurrent access to consumer is not supported
> URI:/api/message/TestQueue
> STATUS:500
> MESSAGE:javax.servlet.ServletException: javax.servlet.ServletException:
> javax.servlet.ServletException: Concurrent
> access to consumer is not supported
> SERVLET:MessageServlet
> CAUSED BY:javax.servlet.ServletException: javax.servlet.ServletException:
> javax.servlet.ServletException: Concurrent
> access to consumer is not supported
> CAUSED BY:javax.servlet.ServletException: javax.servlet.ServletException:
> Concurrent access to consumer is not
> supported
> CAUSED BY:javax.servlet.ServletException: Concurrent access to consumer is
> not supported
> Caused by:
> javax.servlet.ServletException: javax.servlet.ServletException:
> javax.servlet.ServletException: Concurrent access to
> consumer is not supported
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:162)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at org.eclipse.jetty.server.Server.handle(Server.java:516)
> at
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
> at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
> at
> org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
> at java.base/java.lang.Thread.run(Thread.java:1583)
> Caused by: javax.servlet.ServletException: javax.servlet.ServletException:
> Concurrent access to consumer is not
> supported
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:162)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
> ... 17 more
> Caused by: javax.servlet.ServletException: Concurrent access to consumer is
> not supported
> at
> org.apache.activemq.web.MessageServlet.doMessages(MessageServlet.java:196)
> at
> org.apache.activemq.web.MessageServlet.doGet(MessageServlet.java:170)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:554)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
> ... 19 more
> At line:1 char:11
> + $status = Invoke-WebRequest -Uri "http://localhost:8161/api/message/T ...
> + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + CategoryInfo : InvalidOperation:
> (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
> eption
> + FullyQualifiedErrorId :
> WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand{noformat}
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