Alexandre Rafalovitch created SOLR-9528:
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Summary: Make _docid_ (lucene id) a pseudo field
Key: SOLR-9528
URL: https://issues.apache.org/jira/browse/SOLR-9528
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: master (7.0)
Reporter: Alexandre Rafalovitch
Priority: Minor
Lucene document id is a transitory id that cannot be relied on as it can change
on document updates, etc.
However, there are circumstances where it could be useful to use it in a
search. The primarily use is a debugging where some error messages provide only
lucene document id as the reference. For example:
{noformat}
child query must only match non-parent docs, but parent docID=38200 matched
childScorer=class org.apache.lucene.search.DisjunctionSumScorer
{noformat}
We already expose the lucene id with \[docid] transformer with \_docid_ sorting.
On the email list, [[email protected]] proposed that _docid_ should be a
legitimate pseudo-field, which would make it returnable, usable in function
queries, etc.
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