[
https://issues.apache.org/jira/browse/LUCENE-7994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16234399#comment-16234399
]
ASF subversion and git services commented on LUCENE-7994:
---------------------------------------------------------
Commit ff35365b51b47900d73748fbe1eb05ca4c4de098 in lucene-solr's branch
refs/heads/branch_7x from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=ff35365 ]
LUCENE-7994: use int/int scatter map to count facets when number of hits is
small relative to number of unique facet labels
> Use int/int hash map for int taxonomy facet counts
> --------------------------------------------------
>
> Key: LUCENE-7994
> URL: https://issues.apache.org/jira/browse/LUCENE-7994
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Major
> Fix For: master (8.0), 7.2
>
> Attachments: LUCENE-7994.patch, LUCENE-7994.patch
>
>
> Int taxonomy facets today always count into a dense {{int[]}}, which is
> wasteful in cases where the number of unique facet labels is high and the
> size of the current result set is small.
> I factored the native hash map from LUCENE-7927 and use a simple heuristic
> (customizable by the user by subclassing) to decide up front whether to count
> sparse or dense. I also made loading of the large children and siblings
> {{int[]}} lazy, so that they are only instantiated if you really need them.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
