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https://issues.apache.org/jira/browse/SOLR-247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12498336
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Hoss Man commented on SOLR-247:
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I have a really hard time imagining anything but the most trivial use cases for
facet.field=* ... it doesn't really sime like a problem in need of a solution.
with somehting like fl=*, we're only talking about stored fields ... storing a
field makes no sense unless you plan on returning it in the field list some of
the time, so fl=* makes sense as a "return all of hte fields that are possible
to return" option.
There are *lots* of reasons why a field might be indexed though, so faceting on
every indexed field doesn't seem like it would ever make sense.
in my opinion a "best practice" is not to use fl=* unless you are debugging
anyway, otherwise you find yourself getting slammed with large amounts of data
you don't want as the index evolves over time ... something like facet.field=*
would be worse because it's not just the amount of data getting returned that
would increase, but the amount of computation (and time and poor cache
performance) that would spike as well.
if we do this, i would think it only makes sense to generalize the use of "*"
in both fl and facet.field into a true glob style syntax, so we can at least
encourage people who want this type of syntax to use a naming convention to
help limit how much they hurt themselves.
(i have no problem giving people enough rope to hang themselves, but we
shouldn't tie a noose in the rope before we give it to them)
> Allow facet.field=* to facet on all fields (without knowing what they are)
> --------------------------------------------------------------------------
>
> Key: SOLR-247
> URL: https://issues.apache.org/jira/browse/SOLR-247
> Project: Solr
> Issue Type: Improvement
> Reporter: Ryan McKinley
> Priority: Minor
> Attachments: SOLR-247-FacetAllFields.patch
>
>
> I don't know if this is a good idea to include -- it is potentially a bad
> idea to use it, but that can be ok.
> This came out of trying to use faceting for the LukeRequestHandler top term
> collecting.
> http://www.nabble.com/Luke-request-handler-issue-tf3762155.html
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