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https://issues.apache.org/jira/browse/SOLR-10513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15972987#comment-15972987
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Abhishek Kumar Singh commented on SOLR-10513:
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As of Solr 6.5, this has been changed to
*stringDistance.equals(checker.getStringDistance())* .
However, *LuceneLevenshteinDistance* does not even override equals method.
This does not solve the problem yet, because the *default equals* method anyway
compares references.
Hence unable to use *FileBasedSolrSpellChecker* .
> CLONE - ConjunctionSolrSpellChecker wrong check for same string distance
> ------------------------------------------------------------------------
>
> Key: SOLR-10513
> URL: https://issues.apache.org/jira/browse/SOLR-10513
> Project: Solr
> Issue Type: Bug
> Components: spellchecker
> Affects Versions: 4.9
> Reporter: Abhishek Kumar Singh
> Assignee: James Dyer
> Fix For: 5.5
>
>
> See ConjunctionSolrSpellChecker.java
> try {
> if (stringDistance == null) {
> stringDistance = checker.getStringDistance();
> } else if (stringDistance != checker.getStringDistance()) {
> throw new IllegalArgumentException(
> "All checkers need to use the same StringDistance.");
> }
> } catch (UnsupportedOperationException uoe) {
> // ignore
> }
> In line stringDistance != checker.getStringDistance() there is comparing by
> references. So if you are using 2 or more spellcheckers with same distance
> algorithm, exception will be thrown anyway.
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