I know how to debug this, but am hoping someone can give me a tip before I dive in!
Solr 6.0.0, I just started the server, hoping to build the suggester. from the log: 3625 INFO (searcherExecutor-7-thread-1-processing-x:blinkmon) [ x:blinkmon] o.a.s.s.s.SolrSuggester SolrSuggester.build(mySuggester) 3714 ERROR (searcherExecutor-7-thread-1-processing-x:blinkmon) [ x:blinkmon] o.a.s.c.SolrCore null:java.lang.StackOverflowError at org.apache.lucene.util.automaton.Automaton.getNumTransitions(Automaton.java:350) at org.apache.lucene.util.automaton.Automaton.initTransition(Automaton.java:487) at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1306) at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311) at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311) ..repeats.. the console shows "SolrCore null:java.lang.StackOverflowError" from solrconfig.xml: <searchComponent name="suggest" class="solr.SuggestComponent"> <lst name="suggester"> <str name="name">mySuggester</str> <str name="lookupImpl">FuzzyLookupFactory</str> <str name="dictionaryImpl">DocumentDictionaryFactory</str> <str name="field">autocomplete</str> <str name="suggestAnalyzerFieldType">string</str> <str name="buildOnStartup">true</str> <str name="buildOnOptimize">true</str> </lst> </searchComponent> <requestHandler name="/suggest" class="solr.SearchHandler" startup="lazy"> <lst name="defaults"> <str name="suggest">true</str> <str name="suggest.dictionary">mySuggester</str> <str name="suggest.count">10</str> </lst> <arr name="components"> <str>suggest</str> </arr> </requestHandler>