[jira] [Created] (SOLR-15078) ExpandComponent treats all docs with '0' in a numeric collapse field the same as if null

["Chris M. Hostetter (Jira)" <ji...@apache.org>]

Chris M. Hostetter created SOLR-15078:
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             Summary: ExpandComponent treats all docs with '0' in a numeric collapse field the same as if null
                 Key: SOLR-15078
                 URL: https://issues.apache.org/jira/browse/SOLR-15078
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Chris M. Hostetter


ExpandComponent has an equivalent to the collapse qparser bug tracked in SOLR-15047...
{quote}...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 [...] 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 [...] code still explicitly equates "0" in a numeric field with the "null group"
{quote}
 



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