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https://issues.apache.org/jira/browse/LUCENE-7561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-7561.
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Resolution: Fixed
Fix Version/s: 6.4
master (7.0)
I added sorted indices to the BWC test here:
https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;a=commit;h=774e31b6dd7184fb6d43fca83e32fcb46da32e20
> Add back-compat indices for index sorting
> -----------------------------------------
>
> Key: LUCENE-7561
> URL: https://issues.apache.org/jira/browse/LUCENE-7561
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: master (7.0), 6.4
>
>
> Index time sorting is a powerful feature making searches that are "congruent"
> with the sort much faster, in exchange for slower indexing. For some use
> cases this is a great tradeoff.
> We recently promoted the feature to core (LUCENE-6766) and made it very
> simple to use (you just call {{IndexWriterConfig.setIndexSort}}. In
> LUCENE-7537 we are adding support for multi-valued fields.
> I think it's important we properly test backwards compatibility and from a
> quick look it looks like we have no sorted indices in
> {{TestBackwardsCompatibility}} ...
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