[jira] [Created] (JCR-3481) NullPointerException in DescendantSelfAxisScorer#nextDoc

["Edgar Vonk (JIRA)" <ji...@apache.org>]

Edgar Vonk created JCR-3481:
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             Summary: NullPointerException in DescendantSelfAxisScorer#nextDoc
                 Key: JCR-3481
                 URL: https://issues.apache.org/jira/browse/JCR-3481
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core
    Affects Versions: 2.4.2
         Environment: Magnolia CMS 4.4.9-jr24, Jackrabbit 2.4.2, Lucene 3.0.3, XPath
            Reporter: Edgar Vonk


For certain XPath search queries we get nullpointerexceptions in the DescendantSelfAxisScorer#nextDoc method because the 'subScorer' var is null.

It seems other people have the issue as well:
http://jackrabbit.510166.n4.nabble.com/JCR-SQL2-query-NullPointerException-in-DescendantSelfAxisQuery-td4657009.html

It seems a bit arbitrary when it occurs. It seems to occur only when we search using certain short search terms. Also it occurs on stem words when we configure to use a different Lucene analyzer in Jackrabbit (e.g. the DutchAnalyzer and searching on 'een' or 'het').

We use a custom Jackrabbit indexing-configuration.xml but I even tried without using a indexing-configuration and also then the problem occurs. 

Any ideas on what could cause this?

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