[jira] [Updated] (LUCENE-5869) FuzzyQuery should require positive maxExpansions

["Ryan Ernst (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-5869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ryan Ernst updated LUCENE-5869:
-------------------------------

    Attachment: LUCENE-5869.patch

Simple patch with test.

> FuzzyQuery should require positive maxExpansions
> ------------------------------------------------
>
>                 Key: LUCENE-5869
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5869
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Ryan Ernst
>         Attachments: LUCENE-5869.patch
>
>
> FuzzyQuery currently only disallows negative values of {{maxExpansions}}.  However, passing {{0}} causes an NPE when the underlying {{TopTermsRewrite}} does a {{peek()}} on an empty queue, which returns {{null}}, and then goes on using it unknowingly.



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