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ASF subversion and git services commented on SOLR-15047: -------------------------------------------------------- Commit c3dfa68ff9189acd753430a1c61843cbd34a187c in lucene-solr's branch refs/heads/branch_8x from Chris M. Hostetter [ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=c3dfa68 ] SOLR-15047: Fix collapse parser behavior when collapsing on numeric fields to differentiate '0' group from null group > 'collapse' on numeric field treats all docs with '0' in collapse field as > part of the null group > ------------------------------------------------------------------------------------------------ > > Key: SOLR-15047 > URL: https://issues.apache.org/jira/browse/SOLR-15047 > Project: Solr > Issue Type: Bug > Security Level: Public(Default Security Level. Issues are Public) > Reporter: Chris M. Hostetter > Assignee: Chris M. Hostetter > Priority: Major > Attachments: SOLR-15047.patch, SOLR-15047.patch, SOLR-15047.patch > > > The CollapseQParser has some very, _very_, old code/semantics in it that date > back to when the {{FieldCache}} was incapable of differentiating between a > document that contained '0' in the field being un-inverted, and a document > that didn't have any value in that field. > This limitation does not exist in DocValues (nor has it existed for a long > time) but as the DocValues API has evolved, and as the collapse code has been > updated to take advantage of the newer APIs that make it obvious when a > document has no value in a field, the collapse code still explicitly equates > "0" in a numeric field with the "null group" > We can/should fix this bug so that the behavior is sane. > ---- > Known workaround for this problem: (redundantly) index a "string" version of > the field being collapsed on - but this is a poor substitute fro being able > to efficiently collapse on numeric fields (which take up less space on disk > and in the collapse data structures) -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org