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https://issues.apache.org/jira/browse/HTTPCORE-31?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oleg Kalnichevski reassigned HTTPCORE-31:
-----------------------------------------
Assignee: Oleg Kalnichevski
Asankha,
It can well be that HTTPCORE-28 also fixed this bug, as I am currently unable
to reproduce the problem. I'll be adding more test coverage for the NIO
extensions in the coming days and hopefully there will be enough evidence that
the bug is gone.
Oleg
> ConcurrentModificationException thrown by
> DefaultConnectingIOReactor.processTimeouts() when 2 worker threads are used
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: HTTPCORE-31
> URL: https://issues.apache.org/jira/browse/HTTPCORE-31
> Project: HttpComponents Core
> Issue Type: Bug
> Components: HttpCore NIO
> Affects Versions: 4.0-alpha4
> Reporter: Asankha C. Perera
> Assigned To: Oleg Kalnichevski
>
> I am seeing a ConcurrentModificationException thrown by
> DefaultConnectingIOReactor.processTimeouts() when a load test is being
> performed. The Javadocs for the Selector.keys() states that the returned Set
> is not directly modifiable, but a key is removed only after it has been
> cancelled and its channel deregistered. I have started the
> DefaultConnectingIOReactor with two worker nodes
> Exception in thread "HttpCoreNIOSender"
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:841)
> at java.util.HashMap$KeyIterator.next(HashMap.java:877)
> at
> java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
> at
> org.apache.http.nio.impl.reactor.DefaultConnectingIOReactor.processTimeouts(DefaultConnectingIOReactor.java:151)
> at
> org.apache.http.nio.impl.reactor.DefaultConnectingIOReactor.execute(DefaultConnectingIOReactor.java:92)
> at
> org.apache.axis2.transport.nhttp.HttpCoreNIOSender.executeClientEngine(HttpCoreNIOSender.java:103)
> at
> org.apache.axis2.transport.nhttp.HttpCoreNIOSender.access$000(HttpCoreNIOSender.java:57)
> at
> org.apache.axis2.transport.nhttp.HttpCoreNIOSender$1.run(HttpCoreNIOSender.java:80)
> at java.lang.Thread.run(Thread.java:595)
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