[ 
https://issues.apache.org/jira/browse/NUTCH-532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12516623
 ] 

Doğacan Güney commented on NUTCH-532:
-------------------------------------

> res.getFetchTime() - Math.round(res.getFetchInterval() * 1000d); always give 
> the last fetch time even in 
> AdaptiveFetchSchedule. 

That's good to hear.

[...snip...]

> Regardings your suggestion to change the CrawlDatum object, I'm wondering few 
> things:
> - why do we keep the fetchinterval as a FLOAT ? store as a Long could avoid 
> to make this kind of conversion.
> - why do we use fetchinterval in second ? it seems that we always use the 
> fetchinterval in milisecond, so we can maybe 
> import it from the config files in second and store it in the crawldatum in 
> milisecond.

Unfortunately, I don't know :). Andrzej Bialecki has written that code and he 
knows fetch interval / fetch time stuff better than me. So he can make a much 
more informed comment.

> - Perhaps we can also create a new method (setFetchTimeBasedOnInterval(time) 
> ), instead of repeating 
> datum.setFetchTime(fetchTime + Math.round(datum.getFetchInterval() * 
> 1000.0d)) in different class. don't u think ? 

+1

IMHO, any code duplicated in more than a few places should be refactored into a 
method.

[...snip...]

> CrawlDbMerger: wrong computation of last fetch time
> ---------------------------------------------------
>
>                 Key: NUTCH-532
>                 URL: https://issues.apache.org/jira/browse/NUTCH-532
>             Project: Nutch
>          Issue Type: Bug
>            Reporter: Emmanuel Joke
>            Assignee: Emmanuel Joke
>             Fix For: 1.0.0
>
>         Attachments: NUTCH-532.patch
>
>
> CrawlDbMerger.reduce analyse the last fetch time of each record and keep the 
> more recent record.
> This comparison is based on a FetchInterval in days : resTime = 
> res.getFetchTime() - Math.round(res.getFetchInterval() * 3600 * 24 * 1000);
> It was not really a noticeable as the Math.Round method return the 
> INTEGER.MAX_VALUE i.e 25 days.

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