[LUCENE-2523] if index is too old you should hit an exception saying so

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.0-ALPHA
• Component/s: core/index
• Lucene Fields: New, Patch Available
• Assignee: Uwe Schindler
• Reporter: Michael McCandless
• Created: 02/Jul/10 09:32
• Updated: 28/Aug/22 12:28
• Resolved: 20/Jul/10 14:56

Description

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:

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)

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

Sub-Tasks

• If index is pre-3.0 IndexWriter does not fail on open: Closed