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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: IndexFormatTooOldException while upgrading Lucene 4.10 index to 5.2
Date Tue, 16 Jun 2015 09:35:22 GMT
Hi,

you need to add the JAR file lucene-backward-codec.jar to the classpath (or add it via Maven).
It contains the codecs to read pre-5.0 versions.

Uwe

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


> -----Original Message-----
> From: Sven Teichmann [mailto:s.teichmann@s4ip.de]
> Sent: Tuesday, June 16, 2015 10:34 AM
> To: java-user@lucene.apache.org
> Subject: IndexFormatTooOldException while upgrading Lucene 4.10 index to
> 5.2
> 
> Today I tried to upgrade a Lucene 4.10 index to 5.2 using the IndexUpgrader.
> This throws the following exception:
> 
> Exception in thread "Lucene Merge Thread #0"
> org.apache.lucene.index.MergePolicy$MergeException:
> org.apache.lucene.index.IndexFormatTooOldException: Format version is
> not supported (resource
> BufferedChecksumIndexInput(MMapIndexInput(path="/data/title_lu5_en_
> 201506/vol2/_0_Direct_0.dvdm"))):
> 2 (needs to be between 3 and 3). This version of Lucene only supports
> indexes created with release 4.0 and later.
> 	at
> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeExceptio
> n(ConcurrentMergeScheduler.java:673)
> 	at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(Co
> ncurrentMergeScheduler.java:641)
> Caused by: org.apache.lucene.index.IndexFormatTooOldException: Format
> version is not supported (resource
> BufferedChecksumIndexInput(MMapIndexInput(path="/data/title_lu5_en_
> 201506/vol2/_0_Direct_0.dvdm"))):
> 2 (needs to be between 3 and 3). This version of Lucene only supports
> indexes created with release 4.0 and later.
> 	at
> org.apache.lucene.codecs.CodecUtil.checkHeaderNoMagic(CodecUtil.java:2
> 14)
> 	at
> org.apache.lucene.codecs.CodecUtil.checkHeader(CodecUtil.java:199)
> 	at
> org.apache.lucene.codecs.CodecUtil.checkIndexHeader(CodecUtil.java:256)
> 	at
> org.apache.lucene.codecs.memory.DirectDocValuesProducer.<init>(DirectD
> ocValuesProducer.java:126)
> 	at
> org.apache.lucene.codecs.memory.DirectDocValuesFormat.fieldsProducer(D
> irectDocValuesFormat.java:76)
> 	at
> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat$FieldsReader.
> <init>(PerFieldDocValuesFormat.java:268)
> 	at
> org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat.fieldsProducer
> (PerFieldDocValuesFormat.java:358)
> 	at
> org.apache.lucene.index.SegmentDocValues.newDocValuesProducer(Segm
> entDocValues.java:51)
> 	at
> org.apache.lucene.index.SegmentDocValues.getDocValuesProducer(Segme
> ntDocValues.java:67)
> 	at
> org.apache.lucene.index.SegmentReader.initDocValuesProducer(SegmentR
> eader.java:141)
> 	at
> org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:81)
> 	at
> org.apache.lucene.index.ReadersAndUpdates.getReader(ReadersAndUpdat
> es.java:132)
> 	at
> org.apache.lucene.index.ReadersAndUpdates.getReaderForMerge(Readers
> AndUpdates.java:604)
> 	at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3893)
> 	at
> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3543)
> 	at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(Concurrent
> MergeScheduler.java:581)
> 	at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(Co
> ncurrentMergeScheduler.java:619)
> 
> 
> We use DirectDocValuesFormat for two fields and I think that this is the
> problem.
> 
> Any ideas how to upgrade the index to 5.2 anyway?
> 
> Thanks for your help!
> 
> Sven
> 
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