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https://issues.apache.org/jira/browse/LUCENE-9387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17119055#comment-17119055
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Adrien Grand commented on LUCENE-9387:
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I don't think so?
> Remove RAM accounting from LeafReader
> -------------------------------------
>
> Key: LUCENE-9387
> URL: https://issues.apache.org/jira/browse/LUCENE-9387
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
>
> Context for this issue can be found at
> https://lists.apache.org/thread.html/r06b6a63d8689778bbc2736ec7e4e39bf89ae6973c19f2ec6247690fd%40%3Cdev.lucene.apache.org%3E.
> RAM accounting made sense when readers used lots of memory. E.g. when norms
> were on heap, we could return memory usage of the norms array and memory
> estimates would be very close to actual memory usage.
> However nowadays, readers consume very little memory, so RAM accounting has
> become less valuable. Furthermore providing good estimates has become
> incredibly complex as we can no longer focus on a couple main contributors to
> memory usage, but would need to start considering things that we historically
> ignored, such as field infos, segment infos, NIOFS buffers, etc.
> Let's remove RAM accounting from LeafReader?
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