The current leader and TSO services rely on the etcd lease functionality. When the disk experiences jitter, it may cause the leader or TSO service to become unavailable or have very high latency, severely impacting the TIDB service.
we can transfer pd leader into another pd follower to mitigate the affects for the tso if the leader's disk experiences jitter. I believe the probability of all three disks experiencing disk jitter simultaneously should be very low.
bufferflies
commented
10 months ago
Enhancement Task
The current leader and TSO services rely on the etcd lease functionality. When the disk experiences jitter, it may cause the leader or TSO service to become unavailable or have very high latency, severely impacting the TIDB service.
we can transfer pd leader into another pd follower to mitigate the affects for the tso if the leader's disk experiences jitter. I believe the probability of all three disks experiencing disk jitter simultaneously should be very low.