ASF GitHub Bot commented on NUTCH-2737:

sebastian-nagel commented on pull request #477: NUTCH-2737 NUTCH-2738 
Generator: count and log reason of rejections during selection, document 
property generate.restrict.status
URL: https://github.com/apache/nutch/pull/477
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> Generator: count and log reason of rejections during selection
> --------------------------------------------------------------
>                 Key: NUTCH-2737
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2737
>             Project: Nutch
>          Issue Type: Improvement
>          Components: generator
>    Affects Versions: 1.15
>            Reporter: Sebastian Nagel
>            Assignee: Sebastian Nagel
>            Priority: Minor
>             Fix For: 1.16
> During the map phase of the selection step, the generator rejects many 
> (usually most of) items for various reasons:
> - not yet time for a refetch (returned by the fetch scheduler)
> - generator score too low
> - status does not match restrict status
> - Jexl expression not matched
> and some more. It would be useful if the reasons are counted and logged, esp. 
> when the CrawlDb gets bigger and multiple options to restrict the selection 
> are used.

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