Closed
Description
Enhancement
Currently, DROP GLOBAL BINDING would only mark the bind as deleted, i.e, it is not physically removed from mysql.bind_info since we rely on its update_time column for incremental synchronization of the bind record to all tidb servers. Hence in the long run, the number of rows in mysql.bind_info would become larger and larger. We decide to internally GC those bind records with deleted status, and the update_time is 10 leases ago, which means that these records are supposed to be synced by all tidb servers.
Activity