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https://issues.apache.org/jira/browse/LUCENE-7474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15565052#comment-15565052
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Michael McCandless commented on LUCENE-7474:
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A sparse set in the nightly benchmarks is an interesting idea. Do you have a
data set in mind?
At some point I'll write up a blog post summarizing the change and I can also
try to do a before (6.x) / after (upcoming 7.0) one-time performance test for
that.
> Improve doc values writers
> --------------------------
>
> Key: LUCENE-7474
> URL: https://issues.apache.org/jira/browse/LUCENE-7474
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: master (7.0)
>
> Attachments: LUCENE-7474.patch
>
>
> One of the goals of the new iterator-based API is to better handle sparse
> data. However, the current doc values writers still use a dense
> representation, and some of them perform naive linear scans in the nextDoc
> implementation.
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