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https://issues.apache.org/jira/browse/LUCENE-7589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15741431#comment-15741431
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Adrien Grand commented on LUCENE-7589:
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Thanks Mike for having a look. The patch does not show much reduction in spite
of the quality issues of the dataset since existing fields tend to not have
outliers. However if you add a new field that stores the average number of
miles per hour as a long doc values field, then it highlights the quality
issues of this dataset and disk usage for this field goes from 40 to 15.7 bits
per value (-60%) with the patch.
> Prevent outliers from raising the number of bits of everyone with numeric doc
> values
> ------------------------------------------------------------------------------------
>
> Key: LUCENE-7589
> URL: https://issues.apache.org/jira/browse/LUCENE-7589
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-7589.patch
>
>
> Today we encode entire segments with a single number of bits per value. It
> was done this way because it was faster, but it also means a single outlier
> can significantly increase the space requirements. I think we should have
> protection against that.
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