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Posted to issues@lucene.apache.org by GitBox <gi...@apache.org> on 2019/10/27 18:10:51 UTC
[GitHub] [lucene-solr] bruno-roustant opened a new pull request #980:
LUCENE-8920: Reduce the memory used by direct addressing of arcs
bruno-roustant opened a new pull request #980: LUCENE-8920: Reduce the memory used by direct addressing of arcs
URL: https://github.com/apache/lucene-solr/pull/980
Reduce the memory by using "arc presence" bits, one bit per arc. So the node only stores the present arcs (no "missing arc" anymore). The offset to a given arc is computed by getting the number of "presence bits" set up to the corresponding bit for the arc (and multiplied by the number of bytes per arc).
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