Databricks agent changelog

New target-only agent: snapshots and CDC into Delta Lake tables in Unity Catalog through a Databricks SQL warehouse, with key-matched MERGE statements, OAuth service principal or personal access token authentication, and Unity Catalog schema discovery (GS2-607);

Query Studio and data comparison on the SQL warehouse: Databricks SQL quoting and read-only checks, EXPLAIN plans, SHOW CREATE TABLE, cancels that reach the warehouse, and timestamps compared with every microsecond (GS2-607);

Bulk snapshots: entities with bulk operations enabled stage snapshot rows in a file on a Unity Catalog volume and load them with one MERGE from read_files() when the file reaches the entity’s row threshold (1,000,000 by default) or the snapshot completes, instead of one MERGE per transaction (about 1,000 rows a second on a small warehouse). The staging volume is configurable and defaults to <catalog>.gluesync_staging.bulk_files, created when missing; CDC and multi-table entities keep the per-transaction MERGE (GS2-607);