Tim Hearn created SOLR-7559:
-------------------------------
Summary: Cannot use Faceting Feature while using/mlt handler
Key: SOLR-7559
URL: https://issues.apache.org/jira/browse/SOLR-7559
Project: Solr
Issue Type: Bug
Components: MoreLikeThis
Affects Versions: 5.1
Environment: windows 7 OS, Eclipse JDK 7
Reporter: Tim Hearn
When sending a query using the /mlt handler with faceting enabled, Solr returns
an NPE. The exception is as follows:
{quote}
at
org.apache.solr.request.SimpleFacets.getHeatmapCounts(SimpleFacets.java:1555)
at
org.apache.solr.request.SimpleFacets.getFacetCounts(SimpleFacets.java:284)
at
org.apache.solr.handler.MoreLikeThisHandler.handleRequestBody(MoreLikeThisHandler.java:233)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1984)
at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:829)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:446)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:220)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:368)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
at
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
at
org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
{quote}
The issue appears to start in the MoreLikeThisHandler.java class, line 233:
{quote}
if (params.getBool(FacetParams.FACET, false)) {
229 if (mltDocs.docSet == null) {
230 rsp.add("facet_counts", null);
231 } else {
232 SimpleFacets f = new SimpleFacets(req, mltDocs.docSet,
params);
233 rsp.add("facet_counts", f.getFacetCounts());
234 }
235 }
{qupte}
When the above constructor is used in the SimpleFacets class it sets the
ResponseBuilder object in that class to null, which is what causes the NPE to
be thrown when getHeatMapFacets() is called from getFacetCounts()
{quote}
129 public SimpleFacets(SolrQueryRequest req,
130 DocSet docs,
131 SolrParams params) {
132 this(req,docs,params,null);
133 }
134
135 public SimpleFacets(SolrQueryRequest req,
136 DocSet docs,
137 SolrParams params,
138 ResponseBuilder rb) {
139 this.req = req;
140 this.searcher = req.getSearcher();
141 this.docs = this.docsOrig = docs;
142 this.params = orig = params;
143 this.required = new RequiredSolrParams(params);
144 this.rb = rb;
145 }
146
{quote}
{quote}
129 public SimpleFacets(SolrQueryRequest req,
130 DocSet docs,
131 SolrParams params) {
132 this(req,docs,params,null);
133 }
134
135 public SimpleFacets(SolrQueryRequest req,
136 DocSet docs,
137 SolrParams params,
138 ResponseBuilder rb) {
139 this.req = req;
140 this.searcher = req.getSearcher();
141 this.docs = this.docsOrig = docs;
142 this.params = orig = params;
143 this.required = new RequiredSolrParams(params);
144 this.rb = rb;
145 }
146
{quote}
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