Thomas Seidl created SOLR-7883:
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Summary: MoreLikeThis is incompatible with facets
Key: SOLR-7883
URL: https://issues.apache.org/jira/browse/SOLR-7883
Project: Solr
Issue Type: Bug
Components: faceting, MoreLikeThis
Affects Versions: 5.2.1
Environment: Arch Linux / OpenJDK 7.u85_2.6.1-1
Reporter: Thomas Seidl
When using the {{MoreLikeThis}} request handler, it doesn't seem possible to
also have facets. This worked in Solr 4, but seems to be broken now.
Example:
This works: {{?qt=mlt&q=id:item1&mlt.fl=content}}
This doesn't: {{?qt=mlt&q=id:item1&mlt.fl=content&facet=true}}
(Yes, you don't even need to specify any facet fields/ranges/queries. The {{q}}
query just has to match an item.)
While the latter will actually return the same result set as the former, the
HTTP status is 500 and the following error included in the response:
{noformat}
java.lang.NullPointerException
at
org.apache.solr.request.SimpleFacets.getHeatmapCounts(SimpleFacets.java:1753)
at
org.apache.solr.request.SimpleFacets.getFacetCounts(SimpleFacets.java:289)
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:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
{noformat}
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