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From "Adam H." <>
Subject Re: FieldCache usage for custom field collapse in solr 1.4
Date Mon, 06 Dec 2010 22:48:18 GMT
summing up all the information i now have, and the fact I have some
additional custom components that use fieldcache,
such that the specific answer for field collapsing by migrating to solr 4.0
is not a complete solution to my problems,

it seems to me more and more like I might have to actually implement a
custom solr QueryComponent, whereby I will pass it
multiple collectors (perhaps via some kind of MultiCollector interface,
similar to Grouping uses) which will do their appropriate field value
as results are being fetched.

In other words, using a per-segment fieldcache collection as a
post-processing step (e.g after QueryComponent did its collection) does not
seem at all trivial, if at all possible ( is it possible? )
Is this accurate?

Thanks again for all the info here..


On Mon, Dec 6, 2010 at 1:48 PM, Ryan McKinley <> wrote:

> On Mon, Dec 6, 2010 at 4:02 PM, Yonik Seeley <>
> wrote:
> > 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.
> And not be (too) surprised if things change before the official 4.x
> release -- the chances are good that something will change that may
> require reindexing.
> ryan
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