[ https://issues.apache.org/jira/browse/LUCENE-7371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373139#comment-15373139 ]
ASF subversion and git services commented on LUCENE-7371: --------------------------------------------------------- Commit 1a6df249f91ca9f4dab792c48f5965f3388f1776 in lucene-solr's branch refs/heads/branch_6x from [~jpountz] [ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=1a6df24 ] LUCENE-7371: Fix CHANGES entry. > BKDReader could compress values better > -------------------------------------- > > Key: LUCENE-7371 > URL: https://issues.apache.org/jira/browse/LUCENE-7371 > Project: Lucene - Core > Issue Type: Bug > Reporter: Adrien Grand > Assignee: Adrien Grand > Priority: Minor > Fix For: master (7.0), 6.2 > > Attachments: LUCENE-7371.patch, LUCENE-7371.patch, LUCENE-7371.patch > > > For compressing values, BKDReader only relies on shared prefixes in a block. > We could probably easily do better. For instance there are only 256 possible > values for the first byte of the dimension that the values are sorted by, yet > we use a block size of 1024. So by using something simple like run-length > compression we could save 6 bits per value on average. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org