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From Yonik Seeley <>
Subject Re: FieldCache usage for custom field collapse in solr 1.4
Date Mon, 06 Dec 2010 21:02:42 GMT
On Mon, Dec 6, 2010 at 3:41 PM, Adam H. <> wrote:
> Fair enough - I might give it a shot if most functionality is compatible to
> solr 1.4.1 to your mind? and is fairly stable?

Yes, the external APIs are very compatible.
The internal APIs - not so much.
You should reindex also.

> One last Q regarding correct usage of per-segment FieldCache in Solr
> components -
> since this is something I might also have issues with elsewhere, and I
> suspect other people who work on custom logic as well,
> i think it might be useful to have some documentation and/or a simple
> programmatic interface for implementing
> correct access path to these inside a custom SolrComponent.
> I looked around the Grouping code abit and have yet to fully understand
> whats going on, but is the ValueSource supposed to take care of access to
> underlying field?

Yes - you can actually group on arbitrary function queries even.
That will be more useful when we add some bucketing functions.


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