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From Doğacan Güney (JIRA) <j...@apache.org>
Subject [jira] Commented: (NUTCH-443) allow parsers to return multiple Parse object, this will speed up the rss parser
Date Thu, 15 Feb 2007 14:13:06 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12473383
] 

Doğacan Güney commented on NUTCH-443:
-------------------------------------

> Regarding the ObjectWritable: since in this case all data is composed of Writables I
think it's still better to use GenericWritable, > because it saves some bytes on intermediate
data.

Don't get me wrong, I agree with you that GenericWritable is better. The problem is that,
fetcher may output a Parse object (thus a ParseData object), so it needs a wrapper that can
inject configuration. Once Nutch has such a mechanism I'll be happy to provide a patch that
removes ObjectWritable usage here and in Indexer.

> allow parsers to return multiple Parse object, this will speed up the rss parser
> --------------------------------------------------------------------------------
>
>                 Key: NUTCH-443
>                 URL: https://issues.apache.org/jira/browse/NUTCH-443
>             Project: Nutch
>          Issue Type: New Feature
>          Components: fetcher
>    Affects Versions: 0.9.0
>            Reporter: Renaud Richardet
>         Assigned To: Chris A. Mattmann
>            Priority: Minor
>             Fix For: 0.9.0
>
>         Attachments: NUTCH-443-draft-v1.patch, NUTCH-443-draft-v2.patch, NUTCH-443-draft-v3.patch,
NUTCH-443-draft-v4.patch, NUTCH-443-draft-v5.patch, NUTCH-443-draft-v6.patch, NUTCH-443-draft-v7.patch,
parse-map-core-draft-v1.patch, parse-map-core-untested.patch, parsers.diff
>
>
> allow Parser#parse to return a Map<String,Parse>. This way, the RSS parser can
return multiple parse objects, that will all be indexed separately. Advantage: no need to
fetch all feed-items separately.
> see the discussion at http://www.nabble.com/RSS-fecter-and-index-individul-how-can-i-realize-this-function-tf3146271.html

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