What happens when a virtual warehouse is resized?

What happens when a virtual warehouse is resized?
A . When increasing the size of an active warehouse the compute resource for all running and queued queries on the warehouse are affected
B . When reducing the size of a warehouse the compute resources are removed only when they are no longer being used to execute any current statements.
C . The warehouse will be suspended while the new compute resource is provisioned and will resume automatically once provisioning is complete.
D . Users who are trying to use the warehouse will receive an error message until the resizing is complete

View Answer

Answer: A

Explanation:

When a virtual warehouse in Snowflake is resized, specifically when it is increased in size, the additional compute resources become immediately available to all running and queued queries. This means that the performance of these queries can improve due to the increased resources. Conversely, when the size of a warehouse is reduced, the compute resources are not removed until they are no longer being used by any current operations1.

Reference: [COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake Documentation on Virtual Warehouses2