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https://issues.apache.org/jira/browse/LUCENE-7545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-7545:
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Attachment: LUCENE-7545.patch
Here is a patch. It adds a DocsWithFieldSet helper class that first assumes all
docs have a value for the field and only stores the highest docID seen so far,
and migrate to a FixedBitSet if there is a gap.
> Dense norms/doc values should not consume memory in the IW buffer to store
> the set of docs with a value for the field
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-7545
> URL: https://issues.apache.org/jira/browse/LUCENE-7545
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-7545.patch
>
>
> Using a bit set to store docs that have a value for a field is great for
> sparse doc values, but it is a pity we have to pay this price for dense doc
> values too.
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