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https://issues.apache.org/jira/browse/LUCENE-8884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16887154#comment-16887154
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Michael McCandless commented on LUCENE-8884:
--------------------------------------------
Argh!! Not sure how I messed that up ... I’ll fix once I have access to laptop
again. Thanks for checking [~jpountz]!
> Add Directory wrapper to track per-query IO counters
> ----------------------------------------------------
>
> Key: LUCENE-8884
> URL: https://issues.apache.org/jira/browse/LUCENE-8884
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/store
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
>
> Lucene's IO abstractions ({{Directory, IndexInput/Output}}) make it really
> easy to track counters of how many IOPs and net bytes are read for each
> query, which is a useful metric to track/aggregate/alarm on in production or
> dev benchmarks.
> At my day job we use these wrappers in our nightly benchmarks to catch any
> accidental performance regressions.
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