[LUCENE-10168] Only test N-2 codecs nightly

• Type: Task
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 9.1
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Robert Muir
• Created: 12/Oct/21 12:15
• Updated: 28/Aug/22 16:28
• Resolved: 24/Nov/21 07:32

Description

Recently it was decided to extend back compat two major releases, as a best effort.

The effort has not been the best, though.

Test times have doubled (10 minutes vs 5 minutes on my computer), all the slowness is in backwards codecs tests. And 9.0 isn't even released! Imagine how slow the tests would be if we somehow made it to e.g. 9.10 release or something.

It is unsustainable.

This issue is to figure out a way to cut test times back to a number that is reasonable.

Issue Links

• links to: GitHub Pull Request #466