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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-555) Index Corruption
Date Thu, 26 Oct 2006 21:01:17 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-555?page=comments#action_12444998 ] 
            
Michael McCandless commented on LUCENE-555:
-------------------------------------------

Tero, one question: are you copying or rsync'ing the index from where the writers write it,
to where the readers read it?  Or, are your readers reading the same index that the writer
wrote to?

> Index Corruption
> ----------------
>
>                 Key: LUCENE-555
>                 URL: http://issues.apache.org/jira/browse/LUCENE-555
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 1.9
>         Environment: Linux FC4, Java 1.4.9
>            Reporter: dan
>            Priority: Critical
>
> Index Corruption
> >>>>>>>>> output
> java.io.FileNotFoundException: ../_aki.fnm (No such file or directory)
>         at java.io.RandomAccessFile.open(Native Method)
>         at java.io.RandomAccessFile.<init>(RandomAccessFile.java:204)
>         at org.apache.lucene.store.FSIndexInput$Descriptor.<init>(FSDirectory.java:425)
>         at org.apache.lucene.store.FSIndexInput.<init>(FSDirectory.java:434)
>         at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:324)
>         at org.apache.lucene.index.FieldInfos.<init>(FieldInfos.java:56)
>         at org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:144)
>         at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:129)
>         at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:110)
>         at org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:674)
>         at org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:658)
>         at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:517)
> >>>>>>>>> input
> - I open an index, I read, I write, I optimize, and eventually the above happens. The
index is unusable.
> - This has happened to me somewhere between 20 and 30 times now - on indexes of different
shapes and sizes.
> - I don't know the reason. But, the following requirement applies regardless.
> >>>>>>>>> requirement
> - Like all modern database programs, there has to be a way to repair an index. Period.

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