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Posted to dev@hc.apache.org by "Oleg Kalnichevski (Jira)" <ji...@apache.org> on 2020/11/05 16:14:00 UTC
[jira] [Commented] (HTTPCLIENT-2127) CancelledKeyException Triggers
Reactor to Shutdown
[ https://issues.apache.org/jira/browse/HTTPCLIENT-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17226798#comment-17226798 ]
Oleg Kalnichevski commented on HTTPCLIENT-2127:
-----------------------------------------------
[~tudanmeng] Shutdown of the reactor in case of a single cancelled channel looks wrong. I will look into it.
Oleg
> CancelledKeyException Triggers Reactor to Shutdown
> --------------------------------------------------
>
> Key: HTTPCLIENT-2127
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2127
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (async)
> Affects Versions: 5.0.3
> Environment: linux
> Reporter: Danmeng Tu
> Priority: Major
> Fix For: 5.0.4, 5.1-beta1
>
> Attachments: AbstractHttpClientDownloader.java, LimitedAsyncResponseConsumer.java, Screen Shot 2020-11-05 at 23.12.44.png, Screen Shot 2020-11-05 at 23.12.53.png, Screen Shot 2020-11-05 at 23.50.46.png, Screen Shot 2020-11-06 at 00.05.00.png, threads_report.txt
>
>
> Recently I noticed the I/O Reactor of my application always shuts down unexpectedly, so I tried to remote debug my application and found shutting down process is triggered by CancelledKeyException, and since I'm not an expert of NIO therefore I did my best to assist you to diagnose the problem with thread dump and stacktrace attached.
> Apart from that, I also attached the code of how I use HttpClient in order to make sure, such exception is not caused in correct usage of HttpClient.
> Let me know if you need more details please.
> [^AbstractHttpClientDownloader.java]
> [^LimitedAsyncResponseConsumer.java]
> And I found a similar _processEvent_ in HttpAsyncClient 4.1.4, and it seems to be _CancelledKeyException_ is handled without shutting the reactor down.
> HttpAsyncClient 4.1.4
> !Screen Shot 2020-11-06 at 00.05.00.png!
> HttpClient 5.0.3
> !Screen Shot 2020-11-05 at 23.50.46.png!
> Exception details
> !Screen Shot 2020-11-05 at 23.12.44.png!
> !Screen Shot 2020-11-05 at 23.12.53.png!
> Thank you very much.
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