[SOLR-6118] expand.sort doesn't work with function queries

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.8
• Fix Version/s: 4.9, 6.0
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 28/May/14 18:20
• Updated: 09/May/16 18:56
• Resolved: 28/May/14 21:33

Description

The new ExpandComponent doesn't support function queries in the expand.sort parameter, such as geodist() for example. Here's the stack trace if you try:

527561 [qtp1458849419-16] ERROR org.apache.solr.servlet.SolrDispatchFilter  – null:java.lang.IllegalStateException: SortField needs to be rewritten through Sort.rewrite(..) and SortField.rewrite(..)
	at org.apache.lucene.search.SortField.getComparator(SortField.java:433)
	at org.apache.lucene.search.FieldValueHitQueue$OneComparatorFieldValueHitQueue.<init>(FieldValueHitQueue.java:66)
	at org.apache.lucene.search.FieldValueHitQueue.create(FieldValueHitQueue.java:171)
	at org.apache.lucene.search.TopFieldCollector.create(TopFieldCollector.java:1133)
	at org.apache.lucene.search.TopFieldCollector.create(TopFieldCollector.java:1079)
	at org.apache.solr.handler.component.ExpandComponent$GroupExpandCollector.<init>(ExpandComponent.java:310)
	at org.apache.solr.handler.component.ExpandComponent.process(ExpandComponent.java:203)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:218)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
	at org.apache.solr.core.SolrCore.execute(SolrCore.java:1952)