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https://issues.apache.org/jira/browse/CAMEL-21435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17897243#comment-17897243
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Claus Ibsen commented on CAMEL-21435:
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Then its a bad idea to use such low pool, set the value higher
> Commons-pool2: When Camel Netty configured with producerPoolMaxTotal=1 and
> retry, the application hangs
> -------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-21435
> URL: https://issues.apache.org/jira/browse/CAMEL-21435
> Project: Camel
> Issue Type: Bug
> Components: camel-netty
> Reporter: Dmitrii Kriukov
> Priority: Minor
>
> Retry on the onException() clause seems to be impossible for
> producerPoolMaxTotal=1 (leads to call of
> GenericObjectPoolConfig.setMaxTotal())
> This causes infinite hanging in case of network IO exceptions.
> Netty attempts to utilize a new connection when the old one is still
> unreleased.
> It boils down to method
> org.apache.commons.pool2.impl.GenericObjectPool::borrowObject(Duration
> borrowMaxWaitDuration) throws Exception {}
> When producerPoolBlockWhenExhausted = true (the default value), the
> application hangs.
> When producerPoolBlockWhenExhausted = false, I get an exceptionÂ
> 2024-11-11 13:41:44 ERROR [com.opt.obp.ser.ada.cam.Logger] (Camel Thread #2 -
> NettyClientTCPWorker) <> Exception occurred:
> java.util.NoSuchElementException: Pool exhaustedÂ
> So, either way it's impossible to serve
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