nutch-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Yossi Tamari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NUTCH-2456) Allow to index pages/URLs not contained in CrawlDb
Date Tue, 07 Nov 2017 17:41:02 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-2456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16242491#comment-16242491
] 

Yossi Tamari commented on NUTCH-2456:
-------------------------------------

Updated the title as you suggested.
It seems to me that in most use cases, when running without updating the DB (or using freegen),
this is a one-time run, so it is unlikely that the pages are already indexed and need removal.

> Allow to index pages/URLs not contained in CrawlDb
> --------------------------------------------------
>
>                 Key: NUTCH-2456
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2456
>             Project: Nutch
>          Issue Type: Bug
>          Components: indexer
>    Affects Versions: 1.13
>            Reporter: Yossi Tamari
>            Priority: Critical
>
> If http.redirect.max is set to a positive value, the Fetcher will follow redirects, creating
a new CrawlDatum.
> If the redirected URL is fetched and parsed, during indexing for it we have a special
case: dbDatum is null. This means that in [https://github.com/apache/nutch/blob/6199492f5e1e8811022257c88dbf63f1e1c739d0/src/java/org/apache/nutch/indexer/IndexerMapReduce.java#L259]
the document is not indexed, as it is assumed it only has inlinks (actually it has everything
but dbDatum).
> I'm not sure what the correct fix is here. It seems to me the condition should use AND
instead of OR anyway, but I may not understand the original intent. It is clear that it is
too strict as is.
> However, the code following that line assumes all 4 objects are not null, so a patch
would need to change more than just the condition.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message