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From "Mike Adamson (JIRA)" <>
Subject [jira] [Created] (DIRSERVER-1627) NullPointerException in GroupCache.getGroups
Date Tue, 21 Jun 2011 17:59:47 GMT
NullPointerException in GroupCache.getGroups

                 Key: DIRSERVER-1627
             Project: Directory ApacheDS
          Issue Type: Bug
          Components: core
            Reporter: Mike Adamson

I am getting an intermittent NPE in GroupCache.getGroups at the following location:

        for ( Object obj : ehCache.getKeys() )
            String group = ( String ) obj;
>>>      Set<String> members = ( Set<String> ) ehCache.get( group ).getValue();

            if ( members == null )

This happens after leaving the environment for longer than the default group cache expiry
time. I think the default behaviour of ehCache is to remove the value from the cache but not
the key until it is accessed.

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