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https://issues.apache.org/jira/browse/LUCENE-8887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer resolved LUCENE-8887.
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Resolution: Duplicate
this seems to be opened accidentially
> CLONE - Add setting for moving FST offheap/onheap
> -------------------------------------------------
>
> Key: LUCENE-8887
> URL: https://issues.apache.org/jira/browse/LUCENE-8887
> Project: Lucene - Core
> Issue Type: New Feature
> Components: core/FSTs, core/store
> Reporter: LuYunCheng
> Assignee: Simon Willnauer
> Priority: Minor
> Fix For: master (9.0), 8.1
>
> Attachments: offheap_generic_settings.patch, offheap_settings.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> While LUCENE-8635, adds support for loading FST offheap using mmap, users do
> not have the flexibility to specify fields for which FST needs to be
> offheap. This allows users to tune heap usage as per their workload.
> Ideal way will be to add an attribute to FieldInfo, where we have
> put/getAttribute. Then FieldReader can inspect the FieldInfo and pass the
> appropriate On/OffHeapStore when creating its FST. It can support special
> keywords like ALL/NONE.
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