[
https://issues.apache.org/jira/browse/LUCENE-7899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael McCandless updated LUCENE-7899:
---------------------------------------
Fix Version/s: (was: 7.1)
7.0
> Add "exists" query for doc values
> ---------------------------------
>
> Key: LUCENE-7899
> URL: https://issues.apache.org/jira/browse/LUCENE-7899
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 7.0
>
>
> I don't think we have a query today to efficiently test whether a doc values
> field exists (has any value) for each document in the index?
> Now that we use iterators to access doc values, this should be an efficient
> query: we can return the DISI we get for the doc values.
> ElasticSearch indexes its own field to record which field names occur in a
> document, so it's able to do "exists" for any field (not just doc values
> fields), but I think doc values fields we can just get "for free".
> I haven't started on this ... just wanted to open the issue first for
> discussion.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
