[BOOKKEEPER-633] ConcurrentModificationException in RackawareEnsemblePlacementPolicy when a bookie is removed from available list

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.3.0
• Fix Version/s: 4.3.0
• Component/s: bookkeeper-client
• Assignee: Vinayakumar B
• Reporter: Vinayakumar B
• Created: 25/Jun/13 09:42
• Updated: 26/Jun/13 02:20
• Resolved: 26/Jun/13 01:35

Description

Got below exception while running one of the tests from TestReplicationWorker

2013-06-25 15:09:28,546 - ERROR - [main-EventThread:ClientCnxn$EventThread@623] - Caught unexpected throwable
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
	at java.util.HashMap$KeyIterator.next(HashMap.java:828)
	at com.google.common.collect.Iterators$8.computeNext(Iterators.java:735)
	at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
	at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
	at org.apache.bookkeeper.client.RackawareEnsemblePlacementPolicy.onClusterChanged(RackawareEnsemblePlacementPolicy.java:380)
	at org.apache.bookkeeper.client.BookieWatcher.processResult(BookieWatcher.java:135)
	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:591)
	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:497)