Matteo Merli created BOOKKEEPER-1064:
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             Summary: ConcurrentModificationException in 
AuditorLedgerCheckerTest
                 Key: BOOKKEEPER-1064
                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-1064
             Project: Bookkeeper
          Issue Type: Test
            Reporter: Matteo Merli
            Assignee: Matteo Merli
            Priority: Minor
             Fix For: 4.5.0


As seen in:
https://builds.apache.org/job/bookkeeper-master-git-pullrequest/371/

The test is iterating over a hash map that gets updated by a different thread. 
The map needs to be concurrent.

{noformat}
java.util.ConcurrentModificationException
        at 
org.apache.bookkeeper.replication.AuditorLedgerCheckerTest.stopAuditorElectors(AuditorLedgerCheckerTest.java:130)
        at 
org.apache.bookkeeper.replication.AuditorLedgerCheckerTest.tearDown(AuditorLedgerCheckerTest.java:114)
{noformat}

All subsequent tests in the same class are failing because of the 1st test not 
cleaning up properly.




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