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https://issues.apache.org/jira/browse/LUCENE-7537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ferenczi Jim updated LUCENE-7537:
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Attachment: LUCENE-7537.patch
Thanks [~mikemccand]. Sorry I didn't ran the full tests for the last patch.
I've attached a new one which passes all the tests. I fixed the exceptions and
the SimpleText codec. Could you take another look ?
> Add multi valued field support to index sorting
> -----------------------------------------------
>
> Key: LUCENE-7537
> URL: https://issues.apache.org/jira/browse/LUCENE-7537
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Ferenczi Jim
> Attachments: LUCENE-7537.patch, LUCENE-7537.patch, LUCENE-7537.patch
>
>
> Today index sorting can be done on single valued field through the
> NumericDocValues (for numerics) and SortedDocValues (for strings).
> I'd like to add the ability to sort on multi valued fields. Since index
> sorting does not accept custom comparator we could just take the minimum
> value of each document for an ascending sort and the maximum value for a
> descending sort.
> This way we could handle all cases instead of throwing an exception during a
> merge when we encounter a multi valued DVs.
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