Yandong Yao created SOLR-4290:
---------------------------------
Summary: NPE if main query has no match when enable debugQuery for
mlt handler
Key: SOLR-4290
URL: https://issues.apache.org/jira/browse/SOLR-4290
Project: Solr
Issue Type: Bug
Components: MoreLikeThis
Affects Versions: 4.0
Environment: OS: Macos
Solr: 4.0.0
Reporter: Yandong Yao
Priority: Minor
http://localhost:8983/solr/mlt?q=name:aaaa&mlt.fl=name,address&mlt.mindf=1&mlt.mintf=1&fl=*,score&echoParams=ALL&rows=2&debugQuery=true
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">3</int>
<lst name="params">
<str name="mlt.mindf">1</str>
<str name="mlt.fl">name,address</str>
<str name="fl">*,score</str>
<str name="echoParams">ALL</str>
<str name="debugQuery">true</str>
<str name="q">name:aaaa</str>
<str name="mlt.mintf">1</str>
<str name="rows">2</str>
</lst>
</lst>
<result name="match" numFound="0" start="0" maxScore="0.0"/>
<null name="response"/>
<str name="exception_during_debug">
java.lang.RuntimeException: java.lang.NullPointerException at
org.apache.solr.search.QueryParsing.toString(QueryParsing.java:575) at
org.apache.solr.util.SolrPluginUtils.doStandardQueryDebug(SolrPluginUtils.java:263)
at
org.apache.solr.util.SolrPluginUtils.doStandardDebug(SolrPluginUtils.java:242)
at
org.apache.solr.handler.MoreLikeThisHandler.handleRequestBody(MoreLikeThisHandler.java:236)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1699) at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:455)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:276)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:484)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:351) at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)
at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:47)
at
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634) at
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230) at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:66)
at
org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:254)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:680) Caused by:
java.lang.NullPointerException at
org.apache.solr.search.QueryParsing.toString(QueryParsing.java:544) at
org.apache.solr.search.QueryParsing.toString(QueryParsing.java:572) ... 32 more
</str>
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