[LUCENE-3255] Corrupted segment file not detected and wipes index contents

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.9.4, 3.2
• Fix Version/s: 3.4
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Mark Harwood
• Created: 28/Jun/11 14:47
• Updated: 28/Aug/22 12:51
• Resolved: 28/Jun/11 16:38

Description

Lucene will happily wipe an existing index if presented with a latest generation segments_n file of all zeros. File format documentation says segments_N files should start with a format of -9 but SegmentInfos.read accepts >=0 as valid for backward compatibility reasons.