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From Doğacan Güney (JIRA) <j...@apache.org>
Subject [jira] Closed: (NUTCH-702) Lazy Instanciation of Metadata in CrawlDatum
Date Tue, 08 Sep 2009 13:16:57 GMT

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

Doğacan Güney closed NUTCH-702.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1

Committed.

Thanks for the patch, Julien.

> 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
>             Fix For: 1.1
>
>         Attachments: NUTCH-702.patch, NUTCH-702.patch.v2, NUTCH-702v3.patch
>
>
> 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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