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https://issues.apache.org/jira/browse/LUCENE-1263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591647#action_12591647
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Benjamin Pasero commented on LUCENE-1263:
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The problem is actually a SpanNearQuery with an empty list of Spans, zero slop
and TRUE for the inOrder attribute. I have special cased this in our lucene
usage so that we dont run into this issue again. Still I think it should not
cause this NPE in Lucene.
> NullPointerException in java.util.Hashtable from executing a Query
> ------------------------------------------------------------------
>
> Key: LUCENE-1263
> URL: https://issues.apache.org/jira/browse/LUCENE-1263
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 2.1
> Reporter: Benjamin Pasero
> Priority: Minor
>
> Lately we are seeing this stacktrace showing up when executing a Query. Any
> ideas?
> java.lang.NullPointerException at java.util.Hashtable.get(Hashtable.java:482)
> at org.apache.lucene.index.MultiReader.norms(MultiReader.java:167)
> at org.apache.lucene.search.spans.SpanWeight.scorer(SpanWeight.java:72)
> at
> org.apache.lucene.search.DisjunctionMaxQuery$DisjunctionMaxWeight.scorer(DisjunctionMaxQuery.java:131)
> at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:130)
> at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:100)
> at org.apache.lucene.search.MultiSearcher.search(MultiSearcher.java:192)
> at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:66)
> at org.apache.lucene.search.Hits.(Hits.java:45)
> at org.apache.lucene.search.Searcher.search(Searcher.java:45)
> at org.apache.lucene.search.Searcher.search(Searcher.java:37)
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