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From Fran├žois Schiettecatte <>
Subject Re: Is leading wildcard search turned on by default in Solr 3.6.1?
Date Mon, 12 Nov 2012 22:38:59 GMT

You can still use leading wildcards even if you dont have the ReversedWildcardFilterFactory
in your analysis but it means you will be scanning the entire dictionary when the search is
run which can be a performance issue. If you do use ReversedWildcardFilterFactory you wont
have that performance issue but you will increase the overall size of your index. Its a tradeoff.

When I looked into it for a site I built I decided that the tradeoff was not worth it (after
benchmarking) given how few leading wildcards searches it was getting.

Best regards


On Nov 12, 2012, at 5:33 PM, wrote:

> Hi,
> I'm migrating from Solr 1.2 to 3.6.1.  I used the same analyzer as I was, and re-indexed
my data.  I did not add 
> solr.ReversedWildcardFilterFactory to my index analyzer, but yet leading wild cards are
working!!  Does this mean it's turned on by default?  If so, how do I turn it off, and what
are the implication of leaving ON?  Won't my searches be slower and consume more memory?
> Thanks,
> --MJ

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