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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: RangeFilter performance problem using MultiReader
Date Sat, 11 Apr 2009 14:02:34 GMT
Ahhh, OK, perhaps that explains the sizable perf difference you're
seeing w/ optimized vs not.  I'm curious to see the results of your
"merge each month into 1 index" test...

Mike

On Sat, Apr 11, 2009 at 9:21 AM, Roberto Franchini
<ro.franchini@gmail.com> wrote:
> On Sat, Apr 11, 2009 at 1:50 PM, Michael McCandless
> <lucene@mikemccandless.com> wrote:
>> Hmm then I'm a bit baffled again.
>>
>> Because, each of your "by month" indexes presumably has a unique
>> subset of terms for the "date_doc" field?  Meaning, a given "by month"
>> index will have all date_doc corresponding to that month, and a
>> different "by month" index would presumably have no overlap in the
>> terms for the date_doc field.
>
> Yes and no :) In this situation:
>
>>> 200901-->index1, index2
>>> 200902-->index3
>>> 200903-->index4,index5,index6
>
> each month does not overlap with each other, but index1 and index2
> overlap, and so index4 with 5 and 6. So there's overlapping inside a
> single month.
> So I want to trie, next week, this one:
>>> 200901-->index12 (merge of 1 and 2)
>>> 200902-->index3
>>> 200903-->index456 (merge of 4,5,6)
>
> This way we avoid overlapping inside a single month. Maybe this can
> help: stay tuned :)
> R.
>
>
> --
> Roberto Franchini
> http://www.celi.it
> http://www.blogmeter.it
> http://www.memesphere.it
> Tel +39-011-6600814
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>
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