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From Robert Muir <rcm...@gmail.com>
Subject Re: 4.10.0: java.lang.IllegalStateException: cannot write 3x SegmentInfo unless codec is Lucene3x (got: Lucene40)
Date Wed, 10 Sep 2014 11:36:47 GMT
Ian, this looks terrible, thanks for reporting this. Is there any
possible way I could have a copy of that "working" index to make it
easier to reproduce?

On Wed, Sep 10, 2014 at 7:01 AM, Ian Lea <ian.lea@gmail.com> wrote:
> Hi
>
>
> On running a quick test after a handful of minor code changes to deal
> with 4.10 deprecations, a program that updates an existing index
> failed with
>
> Exception in thread "main" java.lang.IllegalStateException: cannot
> write 3x SegmentInfo unless codec is Lucene3x (got: Lucene40)
> at org.apache.lucene.index.SegmentInfos.write3xInfo(SegmentInfos.java:607)
>
> and along the way did something to the index to make it unusable.
>
> Digging a bit deeper and working on a different old test index that
> was lying around, and taking a backup first this time, this is
> reproducible.
>
> The working index:
>
> total 1036
> -rw-r--r-- 1 tril users 165291 Jan 18  2013 _0.fdt
> -rw-r--r-- 1 tril users 125874 Jan 18  2013 _0.fdx
> -rw-r--r-- 1 tril users   1119 Jan 18  2013 _0.fnm
> -rw-r--r-- 1 tril users 378015 Jan 18  2013 _0_Lucene40_0.frq
> -rw-r--r-- 1 tril users 350628 Jan 18  2013 _0_Lucene40_0.tim
> -rw-r--r-- 1 tril users  13988 Jan 18  2013 _0_Lucene40_0.tip
> -rw-r--r-- 1 tril users    311 Jan 18  2013 _0.si
> -rw-r--r-- 1 tril users     69 Jan 18  2013 segments_2
> -rw-r--r-- 1 tril users     20 Jan 18  2013 segments.gen
>
> and output from 4.10 CheckIndex
>
> Opening index @ index/
>
> Segments file=segments_2 numSegments=1 version=4.0.0.2 format=
>   1 of 1: name=_0 docCount=15730
>     version=4.0.0.2
>     codec=Lucene40
>     compound=false
>     numFiles=7
>     size (MB)=0.987
>     diagnostics = {os=Linux, os.version=3.1.0-1.2-desktop,
> source=flush, lucene.version=4.0.0 1394950 - rmuir - 2012-10-06
> 02:58:12, os.arch=amd64, java.version=1.7.0_10, java.vendor=Oracle
> Corporation}
>     no deletions
>     test: open reader.........OK
>     test: check integrity.....OK
>     test: check live docs.....OK
>     test: fields..............OK [13 fields]
>     test: field norms.........OK [0 fields]
>     test: terms, freq, prox...OK [53466 terms; 217447 terms/docs
> pairs; 139382 tokens]
>     test: stored fields.......OK [15730 total field count; avg 1 fields per doc]
>     test: term vectors........OK [0 total vector count; avg 0
> term/freq vector fields per doc]
>     test: docvalues...........OK [0 docvalues fields; 0 BINARY; 0
> NUMERIC; 0 SORTED; 0 SORTED_NUMERIC; 0 SORTED_SET]
>
> No problems were detected with this index.
>
>
> Now run this little program
>
>     public static void main(final String[] _args) throws Exception {
> File index = new File(_args[0]);
> IndexWriterConfig iwcfg = new IndexWriterConfig(Version.LUCENE_4_10_0,
> new StandardAnalyzer());
> iwcfg.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
> Directory d = FSDirectory.open(index, new SimpleFSLockFactory(index));
> IndexWriter iw = new IndexWriter(d, iwcfg);
> Document doc1 = new Document();
> doc1.add(new StringField("type", "test", Field.Store.NO));
> iw.addDocument(doc1);
> iw.close();
>     }
>
> and it fails with
>
> Exception in thread "main" java.lang.IllegalStateException: cannot
> write 3x SegmentInfo unless codec is Lucene3x (got: Lucene40)
> at org.apache.lucene.index.SegmentInfos.write3xInfo(SegmentInfos.java:607)
> at org.apache.lucene.index.SegmentInfos.write(SegmentInfos.java:524)
> at org.apache.lucene.index.SegmentInfos.prepareCommit(SegmentInfos.java:1017)
> at org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4549)
> at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:3062)
> at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:3169)
> at org.apache.lucene.index.IndexWriter.shutdown(IndexWriter.java:915)
> at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:986)
> at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:956)
> at t.main(t.java:25)
>
> and when run CheckIndex again get
>
>
> Opening index @ index/
>
> ERROR: could not read any segments file in directory
> java.nio.file.NoSuchFileException: /tmp/lucene/index/_0.si
> at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
> at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
> at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
> at sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:176)
> at java.nio.channels.FileChannel.open(FileChannel.java:287)
> at java.nio.channels.FileChannel.open(FileChannel.java:334)
> at org.apache.lucene.store.MMapDirectory.openInput(MMapDirectory.java:196)
> at org.apache.lucene.codecs.lucene40.Lucene40SegmentInfoReader.read(Lucene40SegmentInfoReader.java:52)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:362)
> at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:458)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:913)
> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:759)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:454)
> at org.apache.lucene.index.CheckIndex.checkIndex(CheckIndex.java:414)
> at org.apache.lucene.index.CheckIndex.main(CheckIndex.java:2096)
>
> which is true
>
> total 1032
> -rw-r--r-- 1 tril users 165291 Jan 18  2013 _0.fdt
> -rw-r--r-- 1 tril users 125874 Jan 18  2013 _0.fdx
> -rw-r--r-- 1 tril users   1119 Jan 18  2013 _0.fnm
> -rw-r--r-- 1 tril users 378015 Jan 18  2013 _0_Lucene40_0.frq
> -rw-r--r-- 1 tril users 350628 Jan 18  2013 _0_Lucene40_0.tim
> -rw-r--r-- 1 tril users  13988 Jan 18  2013 _0_Lucene40_0.tip
> -rw-r--r-- 1 tril users     69 Jan 18  2013 segments_2
> -rw-r--r-- 1 tril users     20 Jan 18  2013 segments.gen
>
>
> I don't recall the origins of this index but it may well have been
> created in the distant past and been upgraded, explicitly or
> automatically, along the way.  Although evidently not for a while.
>
>
> Running the same test with lucene 4.9.0 and minimal mods to the
> program runs to successful completion.  Here's the CheckIndex output:
>
>
> Opening index @ index-4.9.updated/
>
> Segments file=segments_3 numSegments=2 versions=[4.0.0.2 .. 4.9] format=
>   1 of 2: name=_0 docCount=15730
>     codec=Lucene40
>     compound=false
>     numFiles=7
>     size (MB)=0.987
>     diagnostics = {os=Linux, os.version=3.1.0-1.2-desktop,
> source=flush, lucene.version=4.0.0 1394950 - rmuir - 2012-10-06
> 02:58:12, os.arch=amd64, java.version=1.7.0_10, java.vendor=Oracle
> Corporation}
>     no deletions
>     test: open reader.........OK
>     test: check integrity.....OK
>     test: check live docs.....OK
>     test: fields..............OK [13 fields]
>     test: field norms.........OK [0 fields]
>     test: terms, freq, prox...OK [53466 terms; 217447 terms/docs
> pairs; 139382 tokens]
>     test: stored fields.......OK [15730 total field count; avg 1 fields per doc]
>     test: term vectors........OK [0 total vector count; avg 0
> term/freq vector fields per doc]
>     test: docvalues...........OK [0 docvalues fields; 0 BINARY; 0
> NUMERIC; 0 SORTED; 0 SORTED_NUMERIC; 0 SORTED_SET]
>
>   2 of 2: name=_1 docCount=1
>     codec=Lucene49
>     compound=true
>     numFiles=3
>     size (MB)=0.001
>     diagnostics = {timestamp=1410281698360, os=Linux,
> os.version=3.1.0-1.2-desktop, source=flush, lucene.version=4.9.0
> 1604085 - rmuir - 2014-06-20 06:22:23, os.arch=amd64,
> java.version=1.7.0_10, java.vendor=Oracle Corporation}
>     no deletions
>     test: open reader.........OK
>     test: check integrity.....OK
>     test: check live docs.....OK
>     test: fields..............OK [1 fields]
>     test: field norms.........OK [0 fields]
>     test: terms, freq, prox...OK [1 terms; 1 terms/docs pairs; 0 tokens]
>     test: stored fields.......OK [0 total field count; avg 0 fields per doc]
>     test: term vectors........OK [0 total vector count; avg 0
> term/freq vector fields per doc]
>     test: docvalues...........OK [0 docvalues fields; 0 BINARY; 0
> NUMERIC; 0 SORTED; 0 SORTED_NUMERIC; 0 SORTED_SET]
>
> No problems were detected with this index.
>
>
>
>
> --
> Ian.
>
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