- schema_name: The sharded table's schema name.
- table_name: The sharded table's name.
Cause
In a Sharding Replication system, Barrier DDL directly issued on a shard from a session that has enabled shard DDL can lead to data or schema inconsistency and is not allowed.
Action
When running Sharding Replication, issue Barrier DDL on a sharded table from the catalog connection if you want to change the table schema or truncate the table.