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https://issues.apache.org/jira/browse/SOLR-291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley resolved SOLR-291.
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Resolution: Fixed
Committed. Thanks Koji!
> add "don't cache docList" option
> --------------------------------
>
> Key: SOLR-291
> URL: https://issues.apache.org/jira/browse/SOLR-291
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Koji Sekiguchi
> Priority: Minor
> Attachments: SOLR-291.patch, SOLR-291.patch
>
>
> WHAT:
> A flag "noCacheIfLarger" is added to <queryResultWindowSize/> tag, i.e.
> <queryResultWindowSize noCacheIfLarger="true">50</queryResultWindowSize>. The
> flag can be omitted and the default is false.
> If this flag is set to true and user requires more results (in this case,
> start>=50), SolrIndexSearcher doesn't put the docList into queryResultCache.
> WHY(USE CASE):
> The Solr administrator can calculate *max* memory consumption for filterCache
> and documentCache as follows:
> filterCache: BitDocSet size * max size (cache entries)
> documentCache: average document size * max size (cache entries)
> however, the memory consumtion for queryResultCache is unpredictable.
> With this patch, if the administrator wants to control memory consumtion more
> strict, he can set queryResultWindowSize with noCacheIfLarger="true".
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