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https://issues.apache.org/jira/browse/VFS-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927116#action_12927116
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Ralph Goers commented on VFS-324:
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I've applied that change but also noticed that the collection wasn't
synchronized while iterating over it. I also noticed the same problems occur in
RamFileData so addressed them there as well. However, I'm still not sure this
code is completely thread safe.
> RamFileSystem.close() should clear the cache rather than nulling it
> -------------------------------------------------------------------
>
> Key: VFS-324
> URL: https://issues.apache.org/jira/browse/VFS-324
> Project: Commons VFS
> Issue Type: Bug
> Reporter: Sebb
> Fix For: 2.0
>
>
> RamFileSystem.close() should probably clear the cache rather than nulling it.
> This would allow the field to be made final, as well as avoiding an NPE if
> any methods using the cache are invoked after close.
> Making the field final would ensure it was published correctly - at present
> the class is not thread-safe
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