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set @save_binlog_checksum= @@global.binlog_checksum; set @@global.binlog_checksum = default; select @@global.binlog_checksum as 'must be CRC32 by default'; must be CRC32 by default CRC32 select @@session.binlog_checksum as 'no session var'; ERROR HY000: Variable 'binlog_checksum' is a GLOBAL variable set @@global.binlog_checksum = CRC32; set @@global.binlog_checksum = CRC32; set @@global.master_verify_checksum = 0; set @@global.master_verify_checksum = default; set @@global.binlog_checksum = ADLER32; ERROR 42000: Variable 'binlog_checksum' can't be set to the value of 'ADLER32' # # Bug#22914463 SET BINLOG_CHECKSUM CRASHES WHEN EXECUTED INSIDE # TRANSACTION # # Check that changing binlog_checksum inside transacation # is not allowed. # BEGIN; SET @@global.binlog_checksum = CRC32; ERROR HY000: The system variable binlog_checksum cannot be set when there is an ongoing transaction. COMMIT; XA START 'trx1'; SET @@global.binlog_checksum = CRC32; ERROR HY000: The system variable binlog_checksum cannot be set when there is an ongoing transaction. XA END 'trx1'; XA ROLLBACK 'trx1'; # # Check that changing binlog_checksum if the session owns # a GTID is not allowed. # SET GLOBAL GTID_MODE=OFF_PERMISSIVE; SET GLOBAL GTID_MODE=ON_PERMISSIVE; SET GLOBAL ENFORCE_GTID_CONSISTENCY=ON; SET GLOBAL GTID_MODE=ON; SET SESSION GTID_NEXT='11111111-AAAA-2222-BBBB-000000000000:5'; SET @@global.binlog_checksum = CRC32; ERROR HY000: Variable binlog_checksum cannot be changed by a client that owns a GTID. The client owns 11111111-aaaa-2222-bbbb-000000000000:5. Ownership is released on COMMIT or ROLLBACK. SET SESSION GTID_NEXT='AUTOMATIC'; SET GLOBAL GTID_MODE=ON_PERMISSIVE; SET GLOBAL GTID_MODE=OFF_PERMISSIVE; SET GLOBAL ENFORCE_GTID_CONSISTENCY=OFF; SET GLOBAL GTID_MODE=OFF; set @@global.binlog_checksum = @save_binlog_checksum;