Global: Increased rate of 500s and latency in L7ILB / rL7XLB Envoy

Summary: Global: Increased rate of 500s and latency in L7ILB / rL7XLB Envoy Description: Engineering team has mitigated the issue in asia-south1 region and currently working on rollback for all global regions starting at 2023-03-17 12:00 US/Pacific. The ETA for the rollback is not known at this time. We will provide more information by Friday, 2023-03-17 14:00 US/Pacific. Diagnosis: 500s responses returned from Envoy load balancers. Additional latency on queries passing through the load balancer and receive query errors depending on backend timeouts. Workaround: Customers can increase timeouts in their LB to reduce the impact.