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https://issues.apache.org/jira/browse/CAMEL-10874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877714#comment-15877714
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Claus Ibsen commented on CAMEL-10874:
-------------------------------------
Thanks Nick, I wonder if you want to try to provide a fix as a github PR
http://camel.apache.org/contributing
https://github.com/apache/camel/
> JettyHttpComponent sets selector threads to 0 when running on 1 CPU
> -------------------------------------------------------------------
>
> Key: CAMEL-10874
> URL: https://issues.apache.org/jira/browse/CAMEL-10874
> Project: Camel
> Issue Type: Bug
> Components: camel-jetty
> Affects Versions: 2.16.5, 2.17.5, 2.18.2
> Reporter: Nick Houghton
> Assignee: Andrea Cosentino
>
> In JettyHttpComponent, "createHttpClientTransport" method the number of
> selectors is derived by:
> {noformat}
> int selectors = Runtime.getRuntime().availableProcessors() / 2;
> {noformat}
> If the number of available processors is 1, divided by 2, cast to int is 0
> which causes an IllegalArgumentException.
> The safe way to do this is via Math.max, like the Jetty code does:
> {noformat}
> int selector = Math.max(1, Runtime.getRuntime().availableProcessors() / 2);
> {noformat}
> As per the code this is only exercised when maxThreads is not null, otherwise
> the default constructor is called and selectors are created properly.
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