[LUCENE-1623] Back-compat break with non-ascii field names

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4, 2.4.1
• Fix Version/s: 2.9
• Component/s: core/index
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 28/Apr/09 20:14
• Updated: 28/Aug/22 12:00
• Resolved: 01/May/09 22:13

Description

If a field name contains non-ascii characters in a 2.3.x index, then
on upgrade to 2.4.x unexpected problems are hit. It's possible to hit
a "read past EOF" IOException; it's also possible to not hit an
exception but get an incorrect field name.

This was caused by LUCENE-510, because the FieldInfos (*.fnm) file is
not properly versioned.

Spinoff from http://www.nabble.com/Read-past-EOF-td23276171.html