It seems that the field ( on which stats needs to be cimputed ) should
always remain in memory. This could be a killer. Why isn't it possible
to put that stat-field information into posting stream ( using payload
) which facilitate fast computation of stats withouting requiring it
to keep the conte
> Although I still question whether this is a *good* use of Solr
It's a great use of Lucene, which can be made into a superior
horizontally scalable database when compared with open source
relational database systems.
My only concern, going back to *other* conversation(s) is whether or
not the fi
Hmmm, guess you're right, the stats component
does return that data. It's been a long day...
Although I still question whether this is a *good*
use of Solr, I'd still re-examine my approach
whenever I found myself trying to translate
SQL queries into Solr
But if, after that examination I stil
> Short answer is that no, there isn't an aggregate
> function. And you shouldn't even try
If that is the case why does a 'stats' component exist for Solr with
the SUM function built in?
http://wiki.apache.org/solr/StatsComponent
On Thu, Jan 5, 2012 at 1:37 PM, Erick Erickson wrote:
> You will
You will encounter endless grief until you stop
thinking of Solr/Lucene as a replacement for
an RDBMS. It is a *text search engine*.
Whenever you start asking "how do I implement
a SQL statement in Solr", you have to stop
and reconsider *why* you are trying to do that.
Then recast the question in t
I think I'll have to upgrade then, thanks.
> Date: Thu, 5 Jan 2012 08:32:48 -0500
> Subject: Re: Commit data to disk ...
> From: erickerick...@gmail.com
> To: java-user@lucene.apache.org
>
> Lucene 2.0? I don't even know how to find the docs any more, I really
> suggest you upgrade to something
Folks,
I just committed LUCENE-3628 [1] which cuts over Norms to DocVaues.
This is an index file format change and if you are using trunk you
need to reindex before updating.
happy indexing :)
simon
[1] https://issues.apache.org/jira/browse/LUCENE-3628
-
Thanks Eric for the response.
Will lucene/solr provide me aggregations ( of field vaues ) satisying
a query criteria ? e.g. SELECT SUM(price) WHERE item=fruits
Or I need to use hitCollector to achieve that ?
Any sample solr/lucene query to compte aggregates ( like SUM ) will be great.
-Thanks,
the time interval is just a RangeQuery in the Lucene
world. The rest is pretty standard search stuff.
You probably want to have a look at the NRT
(near real time) stuff in trunk.
Your reads/writes are pretty high, so you'll need
some experimentation to size your site
correctly.
Best
Erick
On We
Lucene 2.0? I don't even know how to find the docs any more, I really
suggest you upgrade to something more recent.
In the 2.9 both IndexReader and IndexWriter have commit() methods.
Best
Erick
On Tue, Jan 3, 2012 at 8:35 AM, Dragon Fly wrote:
>
> Hi, I'm using Lucene 2.0 and was wondering how
Hi Simon,
answers below.
>> It does not seem to be an 'IO related issue' because using RAMDirectory
>> results in the same times.
>> And indexing via Luc4 with only one thread shouldn't be slower than 3.5 (?)
> it could be since we use a different term dictionary impl which is
> more expensive in
hey peter,
On Wed, Jan 4, 2012 at 12:52 AM, Peter K wrote:
> Thanks Simon for you answer!
>
>> as far as I can see you are comparing apples and pears.
>
> When excluding the waiting time I also get the slight but reproducable
> difference**. The times for waitForGeneration are nearly the same
> (
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