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https://issues.apache.org/jira/browse/LUCENE-5267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adrien Grand resolved LUCENE-5267.
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Resolution: Not A Problem
bq. dOff - matchDec <0, so throws java.lang.ArrayIndexOutOfBoundsException
bq. dest.length=33288,dOff=3184,matchDec=34510,matchLen=15,fastLen=16
Indeed, all the lines you pasted make no sense since matchDec should be lower
than dOff. To me this really looks like your index got corrupted somehow. It
could be a single corrupt byte that makes LZ4 read a length on 2 bytes instead
of 1 and this shift makes LZ4 try to decompress bytes that make no sense at
all, explaining why all matchDecs are all higher than dOff.
There are likely only a few chunks that are broken so if you want to try to get
back as many documents as possible from the corrupt segment, the following
piece of code may help https://gist.github.com/jpountz/6461246
> java.lang.ArrayIndexOutOfBoundsException on reading data
> --------------------------------------------------------
>
> Key: LUCENE-5267
> URL: https://issues.apache.org/jira/browse/LUCENE-5267
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.4
> Reporter: Littlestar
> Assignee: Adrien Grand
> Labels: LZ4
>
> java.lang.ArrayIndexOutOfBoundsException
> at org.apache.lucene.codecs.compressing.LZ4.decompress(LZ4.java:132)
> at
> org.apache.lucene.codecs.compressing.CompressionMode$4.decompress(CompressionMode.java:135)
> at
> org.apache.lucene.codecs.compressing.CompressingStoredFieldsReader.visitDocument(CompressingStoredFieldsReader.java:336)
> at
> org.apache.lucene.index.SegmentReader.document(SegmentReader.java:133)
> at
> org.apache.lucene.index.BaseCompositeReader.document(BaseCompositeReader.java:110)
> at
> org.apache.lucene.index.SlowCompositeReaderWrapper.document(SlowCompositeReaderWrapper.java:212)
> at
> org.apache.lucene.index.FilterAtomicReader.document(FilterAtomicReader.java:365)
> at
> org.apache.lucene.index.BaseCompositeReader.document(BaseCompositeReader.java:110)
> at org.apache.lucene.index.IndexReader.document(IndexReader.java:447)
> at org.apache.lucene.search.IndexSearcher.doc(IndexSearcher.java:204)
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