[CASSANDRA-6961] nodes should go into hibernate when join_ring is false

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.0.7, 2.1 beta2
• Labels: qa-resolved
• Assignee: Brandon Williams
• Reporter: Brandon Williams

Authors

Brandon Williams

Reviewers

Tom Hobbs

• Tester: Ryan McGuire
• Created: 31/Mar/14 20:10
• Updated: 16/Apr/19 09:31
• Resolved: 08/Apr/14 22:44

Description

The impetus here is this: a node that was down for some period and comes back can serve stale information. We know from CASSANDRA-768 that we can't just wait for hints, and know that tangentially related CASSANDRA-3569 prevents us from having the node in a down (from the FD's POV) state handle streaming.

We can almost set join_ring to false, then repair, and then join the ring to narrow the window (actually, you can do this and everything succeeds because the node doesn't know it's a member yet, which is probably a bit of a bug.) If instead we modified this to put the node in hibernate, like replace_address does, it could work almost like replace, except you could run a repair (manually) while in the hibernate state, and then flip to normal when it's done.

This won't prevent the staleness 100%, but it will greatly reduce the chance if the node has been down a significant amount of time.