Adrien Grand created LUCENE-9387:
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Summary: 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
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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