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https://issues.apache.org/jira/browse/LUCENE-9795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17287991#comment-17287991
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Robert Muir commented on LUCENE-9795:
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I opened LUCENE-9796 as a followup to fix the API trap that invites this stuff.
But for this issue I think the attached 1-line patch suffices.
> investigate large checkindex/grouping regression in nightly benchmarks
> ----------------------------------------------------------------------
>
> Key: LUCENE-9795
> URL: https://issues.apache.org/jira/browse/LUCENE-9795
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Priority: Major
> Attachments: LUCENE-9795.patch,
> Screen_Shot_2021-02-21_at_09.17.53.png, Screen_Shot_2021-02-21_at_09.30.30.png
>
>
> In the nightly benchmark, checkindex times increased more than 4x on the 2/16
> datapoint
> Looking at the commits on 2/15, most obvious thing to look into is docvalues
> terms dict compression: LUCENE-9663
> Will try to pinpoint it more, my concern is some perf bug such as every
> single term causing decompression of the whole block repeatedly (missing
> seek-within-block opto?)
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