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https://issues.apache.org/jira/browse/NUTCH-2146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965934#comment-14965934
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Jorge Luis Betancourt Gonzalez commented on NUTCH-2146:
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For instance a simple JUnit test
https://github.com/jorgelbg/nutch/blob/NUTCH-2146/src/plugin/index-links/src/test/org/apache/nutch/parse/TestOutlinks.java#L40-L53
that fails with the current implementation of the {{Outlink}} class
> hashCode on the Outlink class
> -----------------------------
>
> Key: NUTCH-2146
> URL: https://issues.apache.org/jira/browse/NUTCH-2146
> Project: Nutch
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.10, 1.11
> Reporter: Jorge Luis Betancourt Gonzalez
> Priority: Minor
>
> The {{Outlink}} class doesn't have a {{hashCode}} method. This doesn't cause
> any trouble with the already implemented plugins but if a developer tries to
> use a {{HashSet}} of outlinks in a custom plugin the {{Outlink}} instances
> with same data (toUrl, anchor) gets added several times. In contrast the
> {{Inlink}} class does have a {{hashCode}} method:
> https://github.com/apache/nutch/blob/trunk/src/java/org/apache/nutch/crawl/Inlink.java#L75-L77.
>
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