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Posted to dev@hc.apache.org by "Oleg Kalnichevski (JIRA)" <ji...@apache.org> on 2007/01/25 11:33:49 UTC
[jira] Assigned: (HTTPCORE-31) ConcurrentModificationException
thrown by DefaultConnectingIOReactor.processTimeouts() when 2 worker
threads are used
[ https://issues.apache.org/jira/browse/HTTPCORE-31?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
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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