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https://issues.apache.org/jira/browse/LUCENE-6107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-6107:
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Attachment: LUCENE-6107.patch
New patch which fixes the definition of the miss count and adds some other
useful statistics, I think it's ready:
* statistics about reads:
** hit count: number of lookups that found a DocIdSet
** miss count: number of lookups that did NOT find a DocIdSet
** total count: number of lookups, the sum of the two above numbers
* statistics about writes:
** cache count: number of generated cache entries
** eviction count: number of evicted cache entries
** cache size: number of entries in the cache, equal to the {{cache count}}
minus the {{eviction count}}
> Add statistics to LRUFilterCache
> --------------------------------
>
> Key: LUCENE-6107
> URL: https://issues.apache.org/jira/browse/LUCENE-6107
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6107.patch, LUCENE-6107.patch, LUCENE-6107.patch
>
>
> It would be useful to have statistics about the usage of the filter cache to
> figure out whether the cache is useful at all and to help tune filter caching
> policies.
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