Between 21:49 PDT on July 10, 2019, and 16:08 PDT on July 11, 2019, a section of Snowflake customers in Azure - East US2 (Virginia) experienced performance degradation while executing queries and workloads.
The root cause was performance degradation of metastore hitting throughput limitations of the disks.
First, we apologize for the inconvenience caused by this incident. We have identified the following steps to make our infrastructure more resilient :
Note: The information contained in this report is confidential and is intended solely to promote safety and reduce customer risk.