...
- log: the conflict is logged, and a error plog is created with the offending statement
- nolog: the conflict is not logged
- fast_nolog: the conflict is not logged and it may be omitted from conflict counters altogether
- log_transaction: the conflict is logged, and a error plog is created with the offending transaction
- default: same as log
See the command chapter the Command Reference or use HELP SET_CONFLICT_HANDLERS for the exact syntax.
Use SHOW_CONFLICT_HANDLERS to query current settings of handlers.