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Posted to dev@nutch.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/30 11:14:00 UTC
[jira] [Commented] (NUTCH-2737) Generator: count and log reason of
rejections during selection
[ https://issues.apache.org/jira/browse/NUTCH-2737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940871#comment-16940871 ]
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
Generator improvements to address NUTCH-2737 and NUTCH-2738:
- add counters for skipped URLs in Selector mapper and reducer
- document generate.restrict.status
- parameterize log messages
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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: 1.17
>
>
> 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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