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https://issues.apache.org/jira/browse/LUCENE-9147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17018022#comment-17018022
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Adrien Grand commented on LUCENE-9147:
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[~erickerickson] Yeah I have similar motivations, with many users who want to
open terabytes of indices on rather small nodes. In my case the main heap user
is usually the terms index of a primary/foreign key, so the ability to load the
terms index off-heap addresses most of the problem. But since it should be an
even less contentious move for stored fields and term vectors, I thought we
should do it! :)
> Move the stored fields index off-heap
> -------------------------------------
>
> Key: LUCENE-9147
> URL: https://issues.apache.org/jira/browse/LUCENE-9147
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Now that the terms index is off-heap by default, it's almost embarrassing
> that many indices spend most of their memory usage on the stored fields index
> or the term vectors index, which are much less performance-sensitive than the
> terms index. We should move them off-heap too?
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