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https://issues.apache.org/jira/browse/DIRSERVER-1627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13052944#comment-13052944
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Emmanuel Lecharny commented on DIRSERVER-1627:
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Very good catch.
The cache should be made eternal. We won't have millions of entries in it.
> NullPointerException in GroupCache.getGroups
> --------------------------------------------
>
> Key: DIRSERVER-1627
> URL: https://issues.apache.org/jira/browse/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 )
> {
> continue;
> }
> 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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