[GitHub] [lucene-solr] s1monw opened a new pull request #606: LUCENE-8671: Allow more fine-grained control over off-heap term dictionaries

[GitBox <gi...@apache.org>]

s1monw opened a new pull request #606: LUCENE-8671: Allow more fine-grained control over off-heap term dictionaries
URL: https://github.com/apache/lucene-solr/pull/606
 
 
   This change allows to control if term-dictionaries are loaded off-heap or on
   heap on a per reader basis. None NRT readers will access all term dictionaries
   off heap including ID fields while readers that require fast ID access like all
   readers used within index writer will by default only load non-ID like fields
   heap. Additionally, IOContext has now the ability to specify if ram-usage should be
   minimized and can control the off vs. on-heap decisions on a per-reader basis.
   
   Off heap term dictionaries are still only used if the index input is memory mapped.

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