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Posted to issues@camel.apache.org by "Matt Nathan (JIRA)" <ji...@apache.org> on 2014/09/18 17:37:34 UTC

[jira] [Created] (CAMEL-7836) ConcurrentModificationException when creating dynamic routes

Matt Nathan created CAMEL-7836:
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             Summary: ConcurrentModificationException when creating dynamic routes
                 Key: CAMEL-7836
                 URL: https://issues.apache.org/jira/browse/CAMEL-7836
             Project: Camel
          Issue Type: Bug
          Components: camel-core
    Affects Versions: 2.13.1
            Reporter: Matt Nathan


There is a (small) chance of ConcurrentModificationException when creating routes dynamically.

{noformat}
java.util.ConcurrentModificationException
  at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373)
  at java.util.LinkedHashMap$KeyIterator.next(LinkedHashMap.java:384)
  at java.util.AbstractCollection.toArray(AbstractCollection.java:124)
  at java.util.ArrayList.&lt;init&gt;(ArrayList.java:131)
  at org.apache.camel.impl.DefaultCamelContext.getRoutes(DefaultCamelContext.java:650)
  at org.apache.camel.impl.DefaultCamelContext.getRoute(DefaultCamelContext.java:655)
{noformat}

The cause is that if you happen to be calling {{getRoute}} at the same time you are creating a new route then the internals of {{new ArrayList}} call {{collection.toArray}} which throws the error.



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