Harley,

I don't really think this is the same thing. Although I think it is
poor form to name it the same, these are 2 different caches. I am
still not sure what increasing the custom cache does. I looked at the
code and it is not clear. I did confirm that this seems t be happening
NOT on commit, but throughout the day. Maybe on Garbage collection?

On Tue, Mar 27, 2012 at 11:42 AM, Harley Parks (Commented) (JIRA)
<[email protected]> wrote:
>
>    [ 
> https://issues.apache.org/jira/browse/SOLR-2155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239711#comment-13239711
>  ]
>
> Harley Parks commented on SOLR-2155:
> ------------------------------------
>
> interesting... conversation regarding both tuning and data requirements.
> I would guess that the size needs to be in power of 2's
>
> since the example given is related to a custom type, it should be noted that 
> a fieldValueCache is by default created, for each document id.
>
> the example given by default in solr 3.4 if needed:
>       <fieldValueCache class="solr.FastLRUCache"
>                        size="512"
>                        autowarmCount="128"
>                        showItems="32" />
>
> Additionally, the custom cache uses the same name, which might not matter, or 
> does it? the custom cache may override the fieldValueCache created by default.
>
>> Geospatial search using geohash prefixes
>> ----------------------------------------
>>
>>                 Key: SOLR-2155
>>                 URL: https://issues.apache.org/jira/browse/SOLR-2155
>>             Project: Solr
>>          Issue Type: Improvement
>>            Reporter: David Smiley
>>         Attachments: GeoHashPrefixFilter.patch, GeoHashPrefixFilter.patch, 
>> GeoHashPrefixFilter.patch, 
>> SOLR-2155_GeoHashPrefixFilter_with_sorting_no_poly.patch, 
>> SOLR.2155.p3.patch, SOLR.2155.p3tests.patch, Solr2155-1.0.2-project.zip, 
>> Solr2155-1.0.3-project.zip, Solr2155-1.0.4-project.zip, 
>> Solr2155-for-1.0.2-3.x-port.patch
>>
>>
>> There currently isn't a solution in Solr for doing geospatial filtering on 
>> documents that have a variable number of points.  This scenario occurs when 
>> there is location extraction (i.e. via a "gazateer") occurring on free text. 
>>  None, one, or many geospatial locations might be extracted from any given 
>> document and users want to limit their search results to those occurring in 
>> a user-specified area.
>> I've implemented this by furthering the GeoHash based work in Lucene/Solr 
>> with a geohash prefix based filter.  A geohash refers to a lat-lon box on 
>> the earth.  Each successive character added further subdivides the box into 
>> a 4x8 (or 8x4 depending on the even/odd length of the geohash) grid.  The 
>> first step in this scheme is figuring out which geohash grid squares cover 
>> the user's search query.  I've added various extra methods to GeoHashUtils 
>> (and added tests) to assist in this purpose.  The next step is an actual 
>> Lucene Filter, GeoHashPrefixFilter, that uses these geohash prefixes in 
>> TermsEnum.seek() to skip to relevant grid squares in the index.  Once a 
>> matching geohash grid is found, the points therein are compared against the 
>> user's query to see if it matches.  I created an abstraction GeoShape 
>> extended by subclasses named PointDistance... and CartesianBox.... to 
>> support different queried shapes so that the filter need not care about 
>> these details.
>> This work was presented at LuceneRevolution in Boston on October 8th.
>
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-- 
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cell 720-256-8076

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