spanner: v8.9.0

8.9.0 (2026-07-16)

Features

• spanner: Add support for custom affinity key (#8157) (0d02ecc)

Bug Fixes

• spanner: Missing callback parameter in close (#8127) (7548ab0)
• spanner: System test against regular sessions (#8872) (bd23de1)

Performance Improvements

• Spanner: Eliminate extend overhead (#8865) (07fe148)