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Ankit Jain commented on LUCENE-8671: ------------------------------------ bq. Ankit Jain We could maybe add a setter on BlockTreeTermsWriter? And it'd write that setting into the index, and BlockTreeTermsReader would read that and then load FSTs on or off heap. [~mikemccand] This sounds pretty good, except that setting is write time. Isn't there a way to make this read time setting? If not, isn't making this system property a better option? Though, I'm happy to go with BlockTreeTermsWriter approach if nobody has better suggestion. Maybe [~jpountz] has any ideas. > Add setting for moving FST offheap/onheap > ----------------------------------------- > > Key: LUCENE-8671 > URL: https://issues.apache.org/jira/browse/LUCENE-8671 > Project: Lucene - Core > Issue Type: New Feature > Components: core/FSTs, core/store > Reporter: Ankit Jain > Priority: Minor > 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org