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https://issues.apache.org/jira/browse/NUTCH-702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julien Nioche updated NUTCH-702:
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Attachment: NUTCH-702.patch.v2
Fixed bug reported by Dmitry Lihachev
> Lazy Instanciation of Metadata in CrawlDatum
> --------------------------------------------
>
> Key: NUTCH-702
> URL: https://issues.apache.org/jira/browse/NUTCH-702
> Project: Nutch
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: Julien Nioche
> Attachments: NUTCH-702.patch, NUTCH-702.patch.v2
>
>
> CrawlDatum systematically instanciates its metadata, which is quite wasteful
> especially in the case of CrawlDBReducer when it generates a new CrawlDatum
> for each incoming link before storing it in a List.
> Initial testing on the lazy instanciation shows an improvement in both speed
> and memory consumption. I will generate a patch for it ASAP
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