Lance Norskog created SOLR-4150:
-----------------------------------
Summary: NPE in distributed result grouping if group.query has no
results
Key: SOLR-4150
URL: https://issues.apache.org/jira/browse/SOLR-4150
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.0
Reporter: Lance Norskog
If group.query has no results in a distributed search, there is an NPE in the
front-end:
{noformat}
Dec 5, 2012 10:40:31 PM org.apache.solr.core.SolrCore execute
INFO: [collection1] webapp=/solr path=/select
params={debugQuery=true&group.ngroups=true&fl=thing,eventid&indent=true&q=thing:("CODE:20517")&group.field=eventid&group.query=thing:CODE*&group=true&wt=json&fq=source:somewhere}
status=500 QTime=745
Dec 5, 2012 10:40:31 PM org.apache.solr.common.SolrException log
SEVERE: null:java.lang.NullPointerException
at
org.apache.solr.search.grouping.distributed.shardresultserializer.TopGroupsResultTransformer.transformToNative(TopGroupsResultTransformer.java:110)
at
org.apache.solr.search.grouping.distributed.responseprocessor.TopGroupsShardResponseProcessor.process(TopGroupsShardResponseProcessor.java:80)
at
org.apache.solr.handler.component.QueryComponent.handleGroupedResponses(QueryComponent.java:620)
at
org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:603)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:309)
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:662)
{noformat}
(This is in sharding, maybe not a SolrCloud problem.)
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