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https://issues.apache.org/jira/browse/LUCENE-5218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13768253#comment-13768253
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Michael McCandless commented on LUCENE-5218:
--------------------------------------------
Which JVM are you using?
> background merge hit exception && Caused by:
> java.lang.ArrayIndexOutOfBoundsException
> -------------------------------------------------------------------------------------
>
> Key: LUCENE-5218
> URL: https://issues.apache.org/jira/browse/LUCENE-5218
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.4
> Environment: Linux MMapDirectory.
> Reporter: Littlestar
>
> forceMerge(80)
> ==============================
> Caused by: java.io.IOException: background merge hit exception:
> _3h(4.4):c79921/2994 _3vs(4.4):c38658 _eq(4.4):c38586 _h1(4.4):c37370
> _16k(4.4):c36591 _j4(4.4):c34316 _dx(4.4):c30550 _3m6(4.4):c30058
> _dl(4.4):c28440 _d8(4.4):c19599 _dy(4.4):c1500/75 _h2(4.4):c1500 into _3vt
> [maxNumSegments=80]
> at org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1714)
> at org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1650)
> at
> com.xxx.yyy.engine.lucene.LuceneEngine.flushAndReopen(LuceneEngine.java:1295)
> ... 4 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 2
> at
> org.apache.lucene.util.PagedBytes$Reader.fillSlice(PagedBytes.java:92)
> at
> org.apache.lucene.codecs.lucene42.Lucene42DocValuesProducer$6.get(Lucene42DocValuesProducer.java:267)
> at
> org.apache.lucene.codecs.DocValuesConsumer$2$1.setNext(DocValuesConsumer.java:239)
> at
> org.apache.lucene.codecs.DocValuesConsumer$2$1.hasNext(DocValuesConsumer.java:201)
> at
> org.apache.lucene.codecs.lucene42.Lucene42DocValuesConsumer.addBinaryField(Lucene42DocValuesConsumer.java:218)
> at
> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsWriter.addBinaryField(PerFieldDocValuesFormat.java:110)
> at
> org.apache.lucene.codecs.DocValuesConsumer.mergeBinaryField(DocValuesConsumer.java:186)
> at
> org.apache.lucene.index.SegmentMerger.mergeDocValues(SegmentMerger.java:171)
> at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:108)
> at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3772)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3376)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:405)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:482)
> ===============
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