reset_option can be any of the
Deletes all binary logs listed in the index file, resets the
binary log index file to be empty, and creates a new binary
log file. Previously named
Section 12.5.1, “SQL Statements for Controlling Master Servers”.
Removes all query results from the query cache.
Makes the slave forget its replication position in the
master binary logs. Also resets the relay log by deleting
any existing relay log files and beginning a new one.
Section 12.5.2, “SQL Statements for Controlling Slave Servers”.