[jira] [Updated] (LUCENE-7677) Cache compound filters earlier than regular queries

["Adrien Grand (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand updated LUCENE-7677:
---------------------------------
    Attachment: LUCENE-7677.patch

Here is a patch that implements this idea.

> Cache compound filters earlier than regular queries
> ---------------------------------------------------
>
>                 Key: LUCENE-7677
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7677
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-7677.patch
>
>
> Say you keep reusing a boolean filter that looks like "A OR B" and never use the A and B queries out of that boolean query. Currently, after this filter has been used 5 times, we would cache both A, B and "A OR B", which means that cache entries for A and B would only be built for the purpose of building a cache entry for "A OR B", which is wasteful.
> By caching compound queries a bit earlier, we could make it less likely to happen since:
>  - we only consider queries as consumed if a scorer is pulled
>  - once the boolean query is cached, we stop pulling scorers on the A and B queries



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