[SOLR-9267] Cloud MLT field boost not working

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.0, 5.1, 5.2, 5.2.1, 5.3, 5.3.1, 5.3.2, 5.4, 5.4.1, 5.5, 5.5.1, 5.5.2, 5.5.3, 5.6, 6.0, 6.0.1, 6.0.2, 6.1, 6.1.1, 6.2
• Component/s: MoreLikeThis
• Assignee: Unassigned
• Reporter: Brian Feldman
• Created: 30/Jun/16 16:19
• Updated: 08/Jun/19 15:37

Description

When boosting by field "fieldname otherFieldName^4.0" the boost is not stripped from the field name when adding to fieldNames ArrayList. So on line 133 of CloudMLTQParser when adding field content to the filteredDocument the field is not found (incorrectly trying to find 'otherFieldName^4.0').

The easiest but perhaps hackiest solution is to overwrite qf:

if (localParams.get("boost") != null) {
	mlt.setBoost(localParams.getBool("boost"));
	boostFields = SolrPluginUtils.parseFieldBoosts(qf);
	qf = boostFields.keySet().toArray(qf);
}

Issue Links

• relates to: SOLR-9644 MoreLikeThis parsers SimpleMLTQParser and CloudMLTQParser don't handle boosts properly