Hi,
We are currently in the process of upgrading our environment from
3.0.27 to 4.0.4. However I see some issues with hints not being sent
from v3 nodes to v4 nodes.
We have a test environment with 2DCs, we are currently writing to DC1
and DC2 have been upgraded from version 3.0.27 -> 4.0.4
Afte
Is it over max hint window ? if over, better to do a full repair.
check table system.hints, do you see rows ?
As I remember, during upgrade, transactions will store in hints until other
cluster have done upgrade, so for safety, change default 3 hours hint
window to long time just before starting