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https://issues.apache.org/jira/browse/NUTCH-1441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424824#comment-13424824
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Lewis John McGibbney commented on NUTCH-1441:
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also for trunk? If you wish to create patch ferdy great, if not then i can pick
it up when i write the test for the class.
> AnchorIndexingFilter should use plain HashSet
> ---------------------------------------------
>
> Key: NUTCH-1441
> URL: https://issues.apache.org/jira/browse/NUTCH-1441
> Project: Nutch
> Issue Type: Bug
> Reporter: Ferdy Galema
> Priority: Minor
> Fix For: 2.1
>
> Attachments: NUTCH-1441.patch
>
>
> AnchorIndexingFilter should use a plain HashSet, instead of WeakHashMap.
> WeakHashMap is unnecessary and can perhaps even cause bugs. (A WeakHashMap
> get its entries removed when the gc notices the keys are not elsewhere in
> use.)
> This patch also makes the filter a bit faster by lazy instantiating the set.
> (No need to create one everytime when deduplication is off).
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