[jira] [Commented] (SOLR-15185) Improve "hash" QParser

["David Smiley (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-15185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17295407#comment-17295407 ] 

David Smiley commented on SOLR-15185:
-------------------------------------

[~jbernste] can you please recommend CHANGES.txt and/or ref guide upgrade notes pertaining to the hash changing?  Or maybe don't bother if nobody would care?  RE the perf change; I'll just be vague to say it's more efficient.

> Improve "hash" QParser
> ----------------------
>
>                 Key: SOLR-15185
>                 URL: https://issues.apache.org/jira/browse/SOLR-15185
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Major
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> * Don't use Filter (to be removed)
> * Do use TwoPhaseIterator, not PostFilter
> * Don't pre-compute matching docs (wasteful)
> * Support more fields, and more field types
> * Faster hash on Strings (avoid Char conversion)
> * Stronger hash when using multiple fields



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