[LUCENE-1208] Deadlock case in IndexWriter on exception just before flush

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3, 2.3.1
• Fix Version/s: 2.3.2, 2.4
• Component/s: core/index
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 07/Mar/08 19:08
• Updated: 28/Aug/22 11:47
• Resolved: 07/Mar/08 21:46

Description

If a document hits a non-aborting exception, eg something goes wrong
in tokenStream.next(), and, that document had triggered a flush
(due to RAM or doc count) then DocumentsWriter will deadlock because
that thread marks the flush as pending but fails to clear it on
exception.

I have a simple test case showing this, and a fix fixing it.