[SOLR-8769] CloudMLTQParser does not use uniqueKey field name for exclusion

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.5.1, 6.0
• Assignee: Unassigned
• Reporter: Erik Hatcher
• Created: 01/Mar/16 16:24
• Updated: 13/Apr/17 01:44
• Resolved: 04/Mar/16 01:29

Description

Using the {!mlt} query parser in cloud mode on a schema with a non-"id" uniqueKey, the main "like this" document won't be excluded properly due to this code:

realMLTQuery.add(createIdQuery("id", id), BooleanClause.Occur.MUST_NOT);

See also https://github.com/apache/lucene-solr/blob/813ca77250db29116812bc949e2a466a70f969a3/solr/core/src/java/org/apache/solr/search/mlt/CloudMLTQParser.java#L166

Like SimpleMLTQParser, it needs to use the uniqueKey field with this type of code: req.getSchema().getUniqueKeyField().getName()