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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