[SOLR-1468] Solrj bug when using facet.missing

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3
• Fix Version/s: 1.4
• Component/s: clients - java
• Assignee: Yonik Seeley
• Reporter: Tomasz Wrobel
• Created: 27/Sep/09 20:55
• Updated: 10/Nov/09 15:52
• Resolved: 27/Sep/09 21:03

Description

Setting queryParams.setMissing("true") or queryParams.set(FacetParams.FACET_MISSING, "true") in Solrj query parameters object results in an exception:
...
Caused by: org.apache.solr.common.SolrException: parsing error
at org.apache.solr.client.solrj.impl.XMLResponseParser.processResponse(XMLResponseParser.java:139)
at org.apache.solr.client.solrj.impl.XMLResponseParser.processResponse(XMLResponseParser.java:100)
at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:385)
at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:183)
at org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:90)
... 37 more
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[3,788]
Message: requires 'name' attribute: int
at org.apache.solr.client.solrj.impl.XMLResponseParser.readNamedList(XMLResponseParser.java:231)
at org.apache.solr.client.solrj.impl.XMLResponseParser.readNamedList(XMLResponseParser.java:236)
at org.apache.solr.client.solrj.impl.XMLResponseParser.readNamedList(XMLResponseParser.java:236)
at org.apache.solr.client.solrj.impl.XMLResponseParser.readNamedList(XMLResponseParser.java:236)
at org.apache.solr.client.solrj.impl.XMLResponseParser.processResponse(XMLResponseParser.java:124)
... 41 more

When "facet.missing" parameter is set to "true" Solr is returning response containing "int" element with no "name", which possibly causes the Solrj parsing problem. Sample server response may look like:

<lst name="genre">
<int name="rock">5559</int>
<int name="soul">5547</int>
<int name="punk">5412</int>
<int>0</int>
</lst>