[GitHub] [lucene] rmuir commented on issue #11717: Determine the performance differences between taxonomy and ssdv faceting

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

rmuir commented on issue #11717:
URL: https://github.com/apache/lucene/issues/11717#issuecomment-1226766804

   Some of the differences are not performance related, but instead usability. In some of those cases I think we can still improve.
   
   For example, it is a usability improvement for the SSDV-based faceting that there is no sidecar index to deal with (for replication, etc).
   
   On the other hand, there's a warming cost for the `OrdinalMap` with SSDV that you need to incur on refresh. But we don't have any way to assist the user in doing this efficiently so that it doesn't actually block any search. Maybe something around `SearcherManager` could help? I'm not sure if we can do anything with `IndexReaderWarmer` as it works at a lower level and only operates on LeafReader.


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