This question has come up a few times, but I've yet to see a good solution.
Basically, if I have highlighting turned on and do a query for q=*, I
get an error that maxBooleanClauses has been exceeded. Granted, this is
a silly query, but a user might do something similar. My expectation is
that queries that work when highlighting is OFF should continue working
when it is ON.
What's the best solution for queries like this? Is it simply to catch
the error and then up maxBooleanClauses? Or to turn off highlighting
when this error occurs?
Or am I doing something altogether wrong?
This is the query I'm using to cause the error:
http://localhost:8983/solr/select/?q=*&start=0&rows=20&hl=true&hl.fl=text
Changing hl to false makes the query go through.
I'm using Solr 4.0.0-dev
The traceback is:
SEVERE: org.apache.lucene.search.BooleanQuery$TooManyClauses:
maxClauseCount is set to 1024
at
org.apache.lucene.search.ScoringRewrite$1.checkMaxClauseCount(ScoringRewrite.java:68)
at
org.apache.lucene.search.ScoringRewrite$ParallelArraysTermCollector.collect(ScoringRewrite.java:159)
at
org.apache.lucene.search.TermCollectingRewrite.collectTerms(TermCollectingRewrite.java:81)
at
org.apache.lucene.search.ScoringRewrite.rewrite(ScoringRewrite.java:114)
at
org.apache.lucene.search.MultiTermQuery.rewrite(MultiTermQuery.java:312)
at
org.apache.lucene.search.highlight.WeightedSpanTermExtractor.extract(WeightedSpanTermExtractor.java:155)
at
org.apache.lucene.search.highlight.WeightedSpanTermExtractor.extract(WeightedSpanTermExtractor.java:144)
at
org.apache.lucene.search.highlight.WeightedSpanTermExtractor.getWeightedSpanTerms(WeightedSpanTermExtractor.java:384)
at
org.apache.lucene.search.highlight.QueryScorer.initExtractor(QueryScorer.java:216)
at
org.apache.lucene.search.highlight.QueryScorer.init(QueryScorer.java:184)
at
org.apache.lucene.search.highlight.Highlighter.getBestTextFragments(Highlighter.java:205)
at
org.apache.solr.highlight.DefaultSolrHighlighter.doHighlightingByHighlighter(DefaultSolrHighlighter.java:511)
at
org.apache.solr.highlight.DefaultSolrHighlighter.doHighlighting(DefaultSolrHighlighter.java:402)
at
org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:121)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1478)
at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:353)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:248)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Thanks,
Mike
