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https://issues.apache.org/jira/browse/LUCENE-7590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-7590:
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Attachment: LUCENE-7590.patch
Patch changes {{DocValuesIterator}} package-private again and adds an API to
{{DocValuesStats}} to help in determining whether a document has or does not
have a value for the field.
The Collector needs to be public because you're supposed to initialize it and
run a search with it.
> Add DocValues statistics helpers
> --------------------------------
>
> Key: LUCENE-7590
> URL: https://issues.apache.org/jira/browse/LUCENE-7590
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/misc
> Reporter: Shai Erera
> Assignee: Shai Erera
> Attachments: LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch,
> LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch
>
>
> I think it can be useful to have DocValues statistics helpers, that can allow
> users to query for the min/max/avg etc. stats of a DV field. In this issue
> I'd like to cover numeric DV, but there's no reason not to add it to other DV
> types too.
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