add some try/catch logic to prevent an exception from killing the whole job.

src/metabase/task/sync_databases.clj

@@ -21,7 +21,11 @@
   [ctx]
   (dorun
     (for [database (db/sel :many Database)]
-      (future (driver/sync-database! database)))))
+      (try
+        ;; NOTE: this happens synchronously for now to avoid excessive load if there are lots of databases
+        (driver/sync-database! database)
+        (catch Exception e
+          (log/error "Error syncing database: " (:id database) e))))))
 
 ;; this is what actually adds our task to the scheduler
 (when (config/is-prod?)