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Posted to dev@lucene.apache.org by "Walter Underwood (JIRA)" <ji...@apache.org> on 2017/08/16 18:28:00 UTC

[jira] [Commented] (SOLR-9458) DocumentDictionaryFactory StackOverflowError on many documents

    [ https://issues.apache.org/jira/browse/SOLR-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16129210#comment-16129210 ] 

Walter Underwood commented on SOLR-9458:
----------------------------------------

I'm getting the same failure using FileDictionaryFactory.


{code:xml}
   <lst name="suggester">
      <str name="name">concepts_fuzzy</str>
      <str name="lookupImpl">FuzzyLookupFactory</str>
      <str name="exactMatchFirst">true</str>
      <str name="sourceLocation">suggest-concepts.txt</str>
      <str name="indexPath">suggest_subjects_infix</str>
      <str name="suggestAnalyzerFieldType">text_lower</str>
      <str name="maxEdits">1</str>
      <str name="transpositions">true</str>
      <str name="buildOnCommit">false</str>
      <str name="buildOnOptimize">false</str>
      <str name="buildOnStartup">true</str>
    </lst>
{code}


> DocumentDictionaryFactory StackOverflowError on many documents
> --------------------------------------------------------------
>
>                 Key: SOLR-9458
>                 URL: https://issues.apache.org/jira/browse/SOLR-9458
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Suggester
>    Affects Versions: 6.1, 6.2
>            Reporter: Chris de Kok
>
> When using the FuzzyLookupFactory in combinarion with the DocumentDictionaryFactory it will throw a stackoverflow trying to build the dictionary.
> Using the HighFrequencyDictionaryFactory works ok but behaves very different.
> ```
> <searchComponent name="suggest" class="solr.SuggestComponent">
>         <lst name="suggester">
>             <str name="name">suggest</str>
>             <str name="field">suggestions</str>
>             <str name="suggestAnalyzerFieldType">suggestions</str>
>             <str name="lookupImpl">FuzzyLookupFactory</str>
>             <str name="dictionaryImpl">DocumentDictionaryFactory</str>
>             <str name="storeDir">suggest_fuzzy</str>
>             <str name="exactMatchFirst">true</str>
>             <str name="buildOnStartup">false</str>
>             <str name="buildOnCommit">false</str>
>             <str name="buildOnOptimize">true</str>
>             <float name="threshold">0</float>
>         </lst>
> ````
> null:java.lang.StackOverflowError
> 	at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311)
> 	at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311)
> 	at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311)
> 	at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1311)



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