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https://issues.apache.org/jira/browse/LUCENE-9955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17343337#comment-17343337
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Adrien Grand commented on LUCENE-9955:
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I put up a PR at https://github.com/apache/lucene/pull/137.
> Remove state from stored fields readers
> ---------------------------------------
>
> Key: LUCENE-9955
> URL: https://issues.apache.org/jira/browse/LUCENE-9955
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Because stored fields readers are cached per-segment per-thread, they can
> quickly start using lots of memory. E.g. an innocent 10kB buffer with 10
> Lucene indices that have 100 segments each and are queried by 100 threads
> would eventually end up using 1GB of heap.
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