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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COLLECTIONS-700) Add a ConcurrentWeakHashMap
Date Wed, 31 Oct 2018 14:47:00 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16670191#comment-16670191
] 

Gary Gregory commented on COLLECTIONS-700:
------------------------------------------

The whole idea is _avoid_ doing just that. Synchronizing the map locks the whole map on each
call, a concurrent version would be thread-safe but not lock the whole map. Also, synchronizing
the whole map still does not fix BEANUTILS-509, see that ticket.

> Add a ConcurrentWeakHashMap
> ---------------------------
>
>                 Key: COLLECTIONS-700
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-700
>             Project: Commons Collections
>          Issue Type: New Feature
>          Components: Map
>            Reporter: Gary Gregory
>            Priority: Major
>
> Add a {{ConcurrentWeakHashMap}}: A concurrent {{[WeakHashMap|https://docs.oracle.com/javase/8/docs/api/java/util/WeakHashMap.html]}}.
A need for this was found to best support BeanUtils's BEANUTILS-509
> This issue is looking for a volunteer.



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