[CAMEL-7836] ConcurrentModificationException when creating dynamic routes

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.13.1
• Fix Version/s: 2.13.3, 2.14.1, 2.15.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Matt Nathan
• Created: 18/Sep/14 15:37
• Updated: 21/Apr/15 11:36
• Resolved: 21/Sep/14 09:24

Description

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

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.<init>(ArrayList.java:131)
  at org.apache.camel.impl.DefaultCamelContext.getRoutes(DefaultCamelContext.java:650)
  at org.apache.camel.impl.DefaultCamelContext.getRoute(DefaultCamelContext.java:655)

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.

Issue Links

• relates to: CAMEL-8673 ConcurrentModificationException when creating dynamic routes