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https://issues.apache.org/jira/browse/LUCENE-4971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689471#comment-13689471
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Robert Muir commented on LUCENE-4971:
-------------------------------------
+1, the new semantics for the getFiniteStrings seem more useful to me anyway: I
dont see any advantage of returning null.
> NPE in AnalyzingSuggester
> -------------------------
>
> Key: LUCENE-4971
> URL: https://issues.apache.org/jira/browse/LUCENE-4971
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 4.1
> Environment: Windows 7
> Reporter: Alexey Kudinov
> Assignee: Michael McCandless
> Fix For: 5.0, 4.4
>
> Attachments: LUCENE-4971.patch, LUCENE-4971.patch
>
>
> Setting maxGraphExpansions > 0 with a lot of expansions (e.g. due to
> synonyms).
> Set<IntsRef> paths = toFiniteStrings(surfaceForm, ts2a);
> paths may be null, so maxAnalyzedPathsForOneInput =
> Math.max(maxAnalyzedPathsForOneInput, paths.size()) may end with NPE
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