In order to support multi-region serverless, DistSQL should create locality-aware distributed plans. This would create table readers on SQL instances located in regions/zones where data is on a local KV node, or on the closest possible SQL instances.

Dependencies:

• Serverless to provide SQL instances with their locality information via the –locality flag.: https://cockroachlabs.atlassian.net/browse/CC-7030

JIRA: https://cockroachlabs.atlassian.net/browse/CRDB-14202

Jira issue: CRDB-15554

Epic CRDB-14202