[GitHub] [lucene-solr] bruno-roustant commented on pull request #2213: LUCENE-9663: Adding compression to terms dict from SortedSet/Sorted DocValues

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

bruno-roustant commented on pull request #2213:
URL: https://github.com/apache/lucene-solr/pull/2213#issuecomment-771782427


   I expect you don't need to change Lucene code but just write a new custom codec (with a specific name) which provides a custom DocValuesFormat. It extends PerFieldDocValuesFormat and implements the method
   DocValuesFormat getDocValuesFormatForField(String field).
   This method provides either a standard Lucene80DocValuesFormat (no compression) or another new custom DocValuesFormat (with a specific name to write in the index) extending Lucene80DocValuesFormat with BEST_COMPRESSION mode.
   The choice can be made either based on a config (e.g. file) which lists all compressed DocValue based fields, or based on a naming convention.


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