[SOLR-11809] QueryComponent.prepare rq parameter parsing fails under SOLR 7.2

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 7.2
• Fix Version/s: 7.2.1, 7.3, 8.0

Environment

Windows 10, java version "1.8.0_151"

• Assignee: Christine Poerschke
• Reporter: Dariusz Wojtas
• Created: 02/Jan/18 21:10
• Updated: 08/Jun/19 15:13
• Resolved: 08/Jan/18 20:54

Description

The LTR functionality that works under SOLR 7.0 and 7.1 stopped working in 7.2.
From the solr-user mailing list it appears it might be related to SOLR-11501 .
I am attaching the minimal working collection definition (attached ltr-sample.zip) that shows the problem.

Please deploy the collection (unpack under "server/solr"), run solr and invoke the URL below.
http://localhost:8983/solr/ltr-sample/select?q=*:*

Behaviour:

• under 7.0 and 7.1 - empty resultset is returned (there is no data in the collection)
• under 7.2 - error: "rq parameter must be a RankQuery". The stacktrace

  2018-01-02 20:51:06.807 INFO  (qtp205125520-20) [   x:ltr-sample] o.a.s.c.S.Request [ltr-sample]  webapp=/solr path=/select params={q=*:*&_=1514909140928} status=400 QTime=23
  2018-01-02 21:04:27.293 ERROR (qtp205125520-17) [   x:ltr-sample] o.a.s.h.RequestHandlerBase org.apache.solr.common.SolrException: rq parameter must be a RankQuery
  	at org.apache.solr.handler.component.QueryComponent.prepare(QueryComponent.java:183)
  	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:269)
  	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:177)
  	at org.apache.solr.core.SolrCore.execute(SolrCore.java:2503)
  	at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:710)
  	at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:516)
  	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:382)
  	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:326)
  	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1751)
  	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
  	[..]
  

i have checked - the same issue exists when I try to invoke the rerank query parser.

Issue Links

• is broken by: SOLR-11501 Depending on the parser, QParser should not parse local-params