nutch-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Susam Pal (JIRA)" <j...@apache.org>
Subject [jira] Commented: (NUTCH-601) Recrawling on existing crawl directory using force option
Date Fri, 29 Feb 2008 15:38:51 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573790#action_12573790
] 

Susam Pal commented on NUTCH-601:
---------------------------------

It continues the recrawl using the existing crawl directory. It generates new segments using
the already existing crawl/crawldb directory. You can assume a recrawl to be a crawl resumed
after a break (taken for generating and merging indexes). In other words, if you did two crawls
with "depth" set as 5, effectively you have done a crawl of depth 10.

I am not clear about what you mean by filtering. Isn't conf/crawl-urlfilter.txt enough for
what you want to filter in the second crawl?

> Recrawling on existing crawl directory using force option
> ---------------------------------------------------------
>
>                 Key: NUTCH-601
>                 URL: https://issues.apache.org/jira/browse/NUTCH-601
>             Project: Nutch
>          Issue Type: Improvement
>    Affects Versions: 1.0.0
>            Reporter: Susam Pal
>            Priority: Minor
>         Attachments: NUTCH-601v0.1.patch, NUTCH-601v0.2.patch, NUTCH-601v0.3.patch, NUTCH-601v1.0.patch
>
>
> Added a '-force' option to the 'bin/nutch crawl' command line. With this option, one
can crawl and recrawl in the following manner:
> {code}
> bin/nutch crawl urls -dir crawl -depth 2 -topN 10 -threads 5
> bin/nutch crawl urls -dir crawl -depth 2 -topN 10 -threads 5 -force
> {code}
> This option can be used for the first crawl too:
> {code}
> bin/nutch crawl urls -dir crawl -depth 2 -topN 10 -threads 5 -force
> bin/nutch crawl urls -dir crawl -depth 2 -topN 10 -threads 5 -force
> {code}
> If one tries to crawl without the -force option when the crawl directory already exists,
he/she finds a small warning along with the error message:
> {code}
> # bin/nutch crawl urls -dir crawl -depth 2 -topN 10 -threads 5
> Exception in thread "main" java.lang.RuntimeException: crawl already
> exists. Add -force option to recrawl.
>        at org.apache.nutch.crawl.Crawl.main(Crawl.java:89)
> {code}

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message