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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2523) if index is too old you should hit an exception saying so
Date Fri, 02 Jul 2010 09:34:49 GMT
if index is too old you should hit an exception saying so
---------------------------------------------------------

                 Key: LUCENE-2523
                 URL: https://issues.apache.org/jira/browse/LUCENE-2523
             Project: Lucene - Java
          Issue Type: Bug
          Components: Index
            Reporter: Michael McCandless
            Priority: Minor
             Fix For: 4.0


If you create an index in 2.3.x (I used demo's IndexFiles) and then try to read it in 4.0.x
(I used CheckIndex), you hit a confusing exception like this:
{noformat}
java.io.IOException: read past EOF
        at org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:154)
        at org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:39)
        at org.apache.lucene.store.ChecksumIndexInput.readByte(ChecksumIndexInput.java:40)
        at org.apache.lucene.store.DataInput.readInt(DataInput.java:76)
        at org.apache.lucene.index.SegmentInfo.<init>(SegmentInfo.java:171)
        at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:230)
        at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:269)
        at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:649)
        at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:484)
        at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:265)
        at org.apache.lucene.index.CheckIndex.checkIndex(CheckIndex.java:308)
        at org.apache.lucene.index.CheckIndex.checkIndex(CheckIndex.java:287)
        at org.apache.lucene.index.CheckIndex.main(CheckIndex.java:930)
{noformat}

I think instead we should throw an IndexTooOldException or something like that?

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