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https://issues.apache.org/jira/browse/LUCENE-10601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17550849#comment-17550849
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Adrien Grand commented on LUCENE-10601:
---------------------------------------
This is an old version, but this bit of code hasn't changed for a long time. At
first sight I have a hard time seeing how we could run into a NPE there, do you
have a unit test that reproduces the issue? What JVM are you running?
> NullPointerException in Lucene Merge (v7.4)
> -------------------------------------------
>
> Key: LUCENE-10601
> URL: https://issues.apache.org/jira/browse/LUCENE-10601
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 7.4
> Reporter: Anantha Krishnan Mahalingam
> Priority: Minor
>
> Exception in thread "Lucene Merge Thread #1"
> org.apache.lucene.index.MergePolicy$MergeException:
> java.lang.NullPointerException
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:704)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:684)
> Caused by: java.lang.NullPointerException
> at
> org.apache.lucene.index.SortingTermVectorsConsumer.abort(SortingTermVectorsConsumer.java:86)
> at org.apache.lucene.index.TermsHash.abort(TermsHash.java:67)
> at
> org.apache.lucene.index.DefaultIndexingChain$$Lambda$58/2086447408.close(Unknown
> Source)
> at
> org.apache.lucene.index.DefaultIndexingChain.abort(DefaultIndexingChain.java:321)
> at
> org.apache.lucene.index.DocumentsWriterPerThread.abort(DocumentsWriterPerThread.java:138)
> at
> org.apache.lucene.index.DocumentsWriter.abortThreadState(DocumentsWriter.java:330)
> at org.apache.lucene.index.DocumentsWriter.abort(DocumentsWriter.java:232)
> at
> org.apache.lucene.index.IndexWriter.rollbackInternalNoCommit(IndexWriter.java:2298)
> at
> org.apache.lucene.index.IndexWriter.rollbackInternal(IndexWriter.java:2274)
> at
> org.apache.lucene.index.IndexWriter.maybeCloseOnTragicEvent(IndexWriter.java:4860)
> at org.apache.lucene.index.IndexWriter.tragicEvent(IndexWriter.java:4850)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4087)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:625)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:662)
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