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https://issues.apache.org/jira/browse/LUCENE-10170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17428891#comment-17428891
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Robert Muir commented on LUCENE-10170:
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I opened an issue to get it started:
https://github.com/mikemccand/luceneutil/issues/145
> Regression in stored fields compression in 9.0
> ----------------------------------------------
>
> Key: LUCENE-10170
> URL: https://issues.apache.org/jira/browse/LUCENE-10170
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: main (9.0)
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> One of the Elasticsearch benchmarks detected a regression that is attributed
> to stored fields compression after moving to a 9.0 snapshot. I managed to
> isolate it to the change done on LUCENE-7521. It looks like LZ4 relied
> significantly on Direct16 for good performance, so replacing it with Packed64
> degraded compression speed.
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