-
Notifications
You must be signed in to change notification settings - Fork 518
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Fix lost coordinator steps during mediator reconnect race #2037
Fix lost coordinator steps during mediator reconnect race #2037
Conversation
⚪
|
⚪
|
Changelog entry
Fix lost coordinator steps during mediator reconnect race.
Changelog category
Additional information
Coordinator's mediator queues were changed in 24-1 to support efficient planning of volatile transactions. Unfortunately mediator queue actor didn't handle mediator steps during mediator reconnect (never needed to, since old code was reloading the full queue from disk on every reconnect), and in rare failure modes this could cause entire planned steps to be lost at some mediators. The fix is to handle mediator steps during re-sync. Fixes KIKIMR-21077.