[
https://issues.apache.org/jira/browse/LUCENE-9387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320973#comment-17320973
]
ASF subversion and git services commented on LUCENE-9387:
---------------------------------------------------------
Commit 79f14b17429d7a77467d8dcbfa27eea3e3ce670d in lucene's branch
refs/heads/main from Adrien Grand
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=79f14b1 ]
LUCENE-9387: Remove CodecReader#ramBytesUsed. (#79)
This commit removes `ramBytesUsed()` from `CodecReader` and all file formats
besides vectors, which is the only remaining file format that might use lots of
memory in the default codec. I left `ramBytesUsed()` on the `completion` format
too, which is another feature that could use lots of memory.
Other components that relied on being able to compute memory usage of readers
like facets' TaxonomyReader and the analyzing suggester assume that readers have
a RAM usage of 0 now.
> 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: Blocker
> Fix For: main (9.0)
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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?
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
