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https://issues.apache.org/jira/browse/LUCENE-8859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866367#comment-16866367
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Jim Ferenczi commented on LUCENE-8859:
--------------------------------------

Thanks for looking Adrien. Currently users can add the file extension (.lkp) to 
the list of files to preload but I agree that it could be simplified. Are you 
concerned by the fact that we could preload a file even when it is consumed 
once (i.e.: if the postings format loads the FST on-heap) ?

> Add an option to load the completion suggester's FST off-heap
> -------------------------------------------------------------
>
>                 Key: LUCENE-8859
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8859
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Jim Ferenczi
>            Priority: Minor
>         Attachments: LUCENE-8859.patch
>
>
> Now that FSTs can be loaded off-heap 
> (https://issues.apache.org/jira/browse/LUCENE-8635) it would be nice to 
> expose this option in the completion suggester postings format. I didn't ran 
> any benchmark yet so I can't say it this really makes sense or not but I 
> wanted to get some opinion whether this could be a good trade-off.



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