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https://issues.apache.org/jira/browse/CAMEL-16782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17373585#comment-17373585
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Claus Ibsen commented on CAMEL-16782:
-------------------------------------
Potential fix
https://github.com/apache/camel/commit/95d62423c0c224985965575d142a902fa37247d2
> Getting FailedToCreateProducerException with reason
> java.util.ConcurrentModificationException randomly when using huge split
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-16782
> URL: https://issues.apache.org/jira/browse/CAMEL-16782
> Project: Camel
> Issue Type: Bug
> Components: camel-core, camel-ftp
> Affects Versions: 3.11.0
> Reporter: Tapio Piironen
> Assignee: Claus Ibsen
> Priority: Major
> Fix For: 3.11.1, 3.12.0
>
>
> When splitting and then sending a huge list of strings(38 000) that create
> xml-documents for each line. Getting randomly this exception (so not for each
> line, about 5 times failed):
> org.apache.camel.FailedToCreateProducerException: Failed to create Producer
> for endpoint: sftp://serverHere?disconnect=true. Reason:
> java.util.ConcurrentModificationException
> at
> org.apache.camel.support.cache.DefaultProducerCache.acquireProducer(DefaultProducerCache.java:155)
> ~[?:?]
> at
> org.apache.camel.support.cache.DefaultProducerCache.doInAsyncProducer(DefaultProducerCache.java:283)
> ~[?:?]
> at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:190)
> ~[?:?]
> at
> org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463)
> ~[?:?]
> at
> org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179)
> ~[?:?]
> at
> org.apache.camel.impl.engine.DefaultReactiveExecutor.schedule(DefaultReactiveExecutor.java:59)
> ~[?:?]
> at
> org.apache.camel.processor.MulticastProcessor.lambda$schedule$1(MulticastProcessor.java:348)
> ~[?:?]
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
> [?:?]
> at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> [?:?]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> [?:?]
> at java.lang.Thread.run(Thread.java:829) [?:?]
> Caused by: java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1043) ~[?:?]
> at java.util.ArrayList$Itr.next(ArrayList.java:997) ~[?:?]
> at
> org.apache.camel.support.cache.ServicePool$MultiplePool.cleanupEvicts(ServicePool.java:318)
> ~[?:?]
> at
> org.apache.camel.support.cache.ServicePool$MultiplePool.acquire(ServicePool.java:333)
> ~[?:?]
> at
> org.apache.camel.support.cache.ServicePool$MultiplePool.acquire(ServicePool.java:296)
> ~[?:?]
> at org.apache.camel.support.cache.ServicePool.acquire(ServicePool.java:109)
> ~[?:?]
> at
> org.apache.camel.support.cache.DefaultProducerCache.acquireProducer(DefaultProducerCache.java:126)
> ~[?:?]
> ... 11 more
>
> two routes:
> <from uri="sftp: ..."/>
> <split parallelProcessing="true">
> <tokenize token="\r\n|\n" xml="false" trim="true"/>
> <convertBodyTo type="java.lang.String" charset="UTF-8"/>
> <to uri="bean:createXML?method=collect"/>
> <to uri="direct:sendToSftpRoute"/>
> </split>
>
> <from uri="direct:sendToSftpRoute"/>
> <to uri="sftp: ...?disconnect=true"/>
>
> This issue came after upgrading from 3.4.2 -> 3.11.0
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