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https://issues.apache.org/jira/browse/LUCENE-10001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17362936#comment-17362936
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Greg Miller commented on LUCENE-10001:
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[~jpountz] thanks for the feedback! The specific use-case I have in mind is
early-terminating facet collection. Imagine the user has a "primary" collector
that's collecting top-n hits and is also collecting into a {{FacetsCollector}}.
Also imagine the primary collector has some early-termination logic where it's
able to signal that it's finished collecting, after a certain number of hits
have been seen or time has passed, etc. It could be desirable to also
early-terminate the {{FacetsCollector}} collection early as well. The facet
counting then becomes incomplete, just like the primary collector, but allows
the user bound the collection time in some way (hits seen, time, etc.).
Essentially the {{FacetsCollector}} isn't able to know on its own when it has
seen enough hits to terminate, and is relying on another collector to make that
determination.
This use-case is a real one I'm familiar with, but it may not be general enough
to support here? Would be curious to hear what you think. Thanks again!
> Make CollectionTerminatedException handling in MultiCollector configurable
> --------------------------------------------------------------------------
>
> Key: LUCENE-10001
> URL: https://issues.apache.org/jira/browse/LUCENE-10001
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Affects Versions: main (9.0)
> Reporter: Greg Miller
> Assignee: Greg Miller
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In LUCENE-6772, {{MultiCollector}} was modified to continue collecting
> against other leaf collectors that had not thrown a
> {{CollectionTerminatedException}} in cases where another one does. It would
> be nice if this behavior could be configurable. Some use-cases might actually
> want to early terminate all leaf collectors as soon as one signals early
> termination.
> We could add a configurable option to the {{MultiCollector#wrap}} factory
> methods that allows users to specify the behavior they want.
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