[LUCENE-1717] IndexWriter does not properly account for the RAM consumed by pending deletes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4, 2.4.1
• Fix Version/s: 2.9
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 25/Jun/09 09:49
• Updated: 28/Aug/22 12:03
• Resolved: 09/Jul/09 12:45

Description

IndexWriter, with autoCommit false, is able to carry buffered deletes for quite some time before materializing them to docIDs (thus freeing up RAM used).

It's only on triggering a merge (or, commit/close) that the deletes are materialized and the RAM is freed.

I expect this in practice is a smallish amount of RAM, but we should still fix it.

I don't have a patch yet so if someone wants to grab this, feel free!!