Controls how a slave thread resolves conflicts and errors during replication.>
IDEMPOTENT mode is intended for use in multi-master replication, circular replication, and some other special replication scenarios for NDB Cluster Replication. (See Section 21.6.10, “NDB Cluster Replication: Multi-Master and Circular Replication”, and Section 21.6.11, “NDB Cluster Replication Conflict Resolution”, for more information.) NDB Cluster ignores any value explicitly set for slave_exec_mode, and always treats it as> In MySQL Server 5.7, STRICT mode is the default value.