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https://issues.apache.org/jira/browse/NUTCH-2334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813569#comment-16813569
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Sebastian Nagel commented on NUTCH-2334:
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Hi [~roannel], I think now with the AND and OR voting strategies I understand
the motivation why to have multiple "voters", e.g., also select those items
with a score exceeding a certain threshold, or of a specific domain, etc. But
I still wonder whether plugins are required: a plugin comes with a certain
overhead in the build system and for activation - a lot overhead when only a
single method (shouldFetch(...)) needs to be implemented. Of course, using
plugins you get maximum flexibility, but wouldn't be a scheduler applying a
Jexl expression on URL and CrawlDatum sufficient for most of these decisions?
Just one suggestion, another is to allow multiple schedulers to be defined in
{{db.fetch.schedule.class}}.
> Extension point for schedulers
> ------------------------------
>
> Key: NUTCH-2334
> URL: https://issues.apache.org/jira/browse/NUTCH-2334
> Project: Nutch
> Issue Type: New Feature
> Components: generator
> Affects Versions: 1.12
> Reporter: Roannel Fernández Hernández
> Assignee: Roannel Fernández Hernández
> Priority: Minor
> Fix For: 1.16
>
>
> With an extension point for schedulers, the users should be able to create
> new schedulers that meet to their own needs.
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