Details
-
Task
-
Resolution: Fixed
-
Major - P3
-
None
-
None
-
Fully Compatible
-
Repl 2019-03-25, Repl 2019-04-08
Description
SERVER-33248 allows a node to choose a sync source with the same lastApplied if it has a higher lastOpCommitted. This leads to sync source cycles, as described in SERVER-39367. This is fixed on 4.2 in SERVER-39367, which reverts the change while introducing a new mechanism to propagate the majority commit point through heartbeats. However, SERVER-39367 is not safe to backport to 4.0, since it increases the likelihood of sync source cycles with nodes that have SERVER-33248. On 4.0, we will just revert SERVER-33248.
Attachments
Issue Links
- is related to
-
SERVER-39367 lastOpCommitted being reset on restart can cause sync source cycle
-
- Closed
-
-
-
- Closed
-
-
SERVER-33248 Allow choosing a sync source that we are up to date with if it has a higher lastOpCommitted
-
- Closed
-