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From "Jack Krupansky" <>
Subject Re: Solr vs ElasticSearch
Date Mon, 04 Aug 2014 13:17:46 GMT
And neither project supports the Lucene faceting module, correct?

And the ES web site says: "WARNING: Facets are deprecated and will be 
removed in a future release. You are encouraged to migrate to aggregations 

That makes it more of an apples/oranges comparison.

-- Jack Krupansky

-----Original Message----- 
From: Toke Eskildsen
Sent: Monday, August 4, 2014 3:33 AM
Subject: Re: Solr vs ElasticSearch

On Mon, 2014-08-04 at 08:31 +0200, Harald Kirsch wrote:
> As for performance, I would expect that it is very hard to find one of
> the two technologies to be generally ahead. Except for plain blunders
> that may be lurking in the code, I would think the inner loops, the
> stuff that really burns CPU cycles, all happens in Lucene, which is the
> same for both.

Faceting/Aggregation is implemented independently and with different
designs for Solr and Elasticsearch. I would be surprised if memory
overhead and performance were about the same for this functionality.

- Toke Eskildsen, State and University Library, Denmark

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