[GitHub] [lucene-solr] msokolov commented on pull request #1543: LUCENE-9378: Disable compression on binary values whose length is less than 32.

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

msokolov commented on pull request #1543:
URL: https://github.com/apache/lucene-solr/pull/1543#issuecomment-638852369


   Our internal benchmarks show slowdowns even as we increase the threshold here, although we can nearly recover (-9% QPS) the previous query-time performance disabling below 128 bytes. I'm beginning to wonder what the case is for compressing BDV at all? Do we see large BinaryDocValues fields that are not, or only rarely, decoded at query time? I think if such fields participate in the search in any significant way (ie for all hits), we are going to see these slowdowns. Maybe the bytes threshold is really just a proxy for binary doc values used as stored fields?


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