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https://issues.apache.org/jira/browse/NUTCH-1441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lewis John McGibbney resolved NUTCH-1441.
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Resolution: Fixed
Committed @revision 1387341 in trunk
Thank you Ferdy
> 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: 1.6, 2.1
>
> Attachments: NUTCH-1441.patch, NUTCH-1441-trunk.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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