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https://issues.apache.org/jira/browse/LUCENE-10125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17420800#comment-17420800
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Adrien Grand commented on LUCENE-10125:
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I tried Robert's patch, generalizing it to shorts and longs, and I'm getting
the exact same merge times with main+patch as on
a7b0aadcfc9f5de120d240e7374bad762a05f1c7 (commit that was used to run
benchmarks on 2021-04-12).
Maybe it would be cleaner if MyBufferedOutputStream implemented something like
{{tryWriteLong}} rather than {{getBuffer}}/{{getCount}}/{{setCount}} to keep
the internal state better encapsulated.
> Investigate indexing throughput regression on NYC Taxis between 2021-04-12
> and 2021-05-24
> -----------------------------------------------------------------------------------------
>
> Key: LUCENE-10125
> URL: https://issues.apache.org/jira/browse/LUCENE-10125
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-10125_hack.patch
>
>
> There's been a significant drop in indexing throughput between 2021-04-12 and
> 2021-05-24 on the NYC Taxis benchmark. Unfortunately several suspects have
> been merged during that period of time so we might need to git bisect to
> figure out which one is responsible for the regression. Interestingly the
> sorted index looks less affected than the non-sorted indexes.
> https://home.apache.org/~mikemccand/lucenebench/sparseResults.html#index_throughput
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