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From "Julien Nioche (JIRA)" <j...@apache.org>
Subject [jira] Updated: (NUTCH-702) Lazy Instanciation of Metadata in CrawlDatum
Date Wed, 27 May 2009 09:10:45 GMT

     [ https://issues.apache.org/jira/browse/NUTCH-702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Julien Nioche updated NUTCH-702:
--------------------------------

    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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