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Subject: Re: Lucandra or some way to query
From: malsmith <malsmith@treehousesystems.com>
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Date: Thu, 15 Apr 2010 19:52:58 -0400
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We looking into migrating from a replicated solr infrastructure to some
form of clustered approach.  Lucandra looks fantastic -- but this
statement is troubling:

"No normalizations are stored (no scoring)"  from
http://github.com/tjake/Lucandra

When I use the demo/samples get do get a relevance score, can anyone
describe (or give a scenario) when this limitation would become a
problem?

Thanks in advance.

On Thu, 2010-04-15 at 05:16 +0000, Jake Luciani wrote:

> Lucandra spreads the data randomly by index + field combination so you
> do get "some" distribution for free. Otherwise you can use "nodetool
> loadbalance" to alter the token ring to alleviate hotspots.
> 
> On Thu, Apr 15, 2010 at 2:04 AM, HubertChang <huixiu@gmail.com> wrote:
> 
>         
>         If you worked with Lucandra in a dedicated searching-purposed
>         cluster, you
>         could balanced the data very well with some effort. 
>         
>         >>I think Lucandra is really a great idea, but since it needs
>         order-preserving-partitioner, does that mean >>there may be
>         some 'hot-spot'
>         during searching?
>         
>         --
>         View this message in context:
>         http://n2.nabble.com/Lucandra-or-some-way-to-query-tp4900727p4905149.html
>         Sent from the cassandra-user@incubator.apache.org mailing list
>         archive at Nabble.com. 
> 
> 


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We looking into migrating from a replicated solr infrastructure to some form of clustered approach.&nbsp; Lucandra looks fantastic -- but this statement is troubling:<BR>
<BR>
&quot;No normalizations are stored (no scoring)&quot;&nbsp; from <A HREF="http://github.com/tjake/Lucandra">http://github.com/tjake/Lucandra</A><BR>
<BR>
When I use the demo/samples get do get a relevance score, can anyone describe (or give a scenario) when this limitation would become a problem?<BR>
<BR>
Thanks in advance.<BR>
<BR>
On Thu, 2010-04-15 at 05:16 +0000, Jake Luciani wrote:<BR>
<BLOCKQUOTE TYPE=CITE>
    Lucandra spreads the data randomly by index + field combination so you do get &quot;some&quot; distribution for free. Otherwise you can use &quot;nodetool loadbalance&quot; to alter the token ring to&nbsp;alleviate&nbsp;hotspots.<BR>
    <BR>
    On Thu, Apr 15, 2010 at 2:04 AM, HubertChang &lt;<A HREF="mailto:huixiu@gmail.com">huixiu@gmail.com</A>&gt; wrote:<BR>
    <BLOCKQUOTE>
        <BR>
        If you worked with Lucandra in a dedicated searching-purposed cluster, you<BR>
        could balanced the data very well with some effort. <BR>
        <BR>
        &gt;&gt;I think Lucandra is really a great idea, but since it needs<BR>
        order-preserving-partitioner, does that mean &gt;&gt;there may be some 'hot-spot'<BR>
        during searching?<BR>
        <BR>
        <FONT COLOR="#888888">--</FONT><BR>
        <FONT COLOR="#888888">View this message in context: <A HREF="http://n2.nabble.com/Lucandra-or-some-way-to-query-tp4900727p4905149.html">http://n2.nabble.com/Lucandra-or-some-way-to-query-tp4900727p4905149.html</A></FONT><BR>
        <FONT COLOR="#888888">Sent from the <A HREF="mailto:cassandra-user@incubator.apache.org">cassandra-user@incubator.apache.org</A> mailing list archive at Nabble.com.</FONT> <BR>
    </BLOCKQUOTE>
    <BR>
</BLOCKQUOTE>
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