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SELECT @@GLOBAL.innodb_undo_logs; @@GLOBAL.innodb_undo_logs 128 128 Expected SET @@GLOBAL.innodb_undo_logs=128; Warnings: Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html SELECT COUNT(@@GLOBAL.innodb_undo_logs); COUNT(@@GLOBAL.innodb_undo_logs) 1 1 Expected SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='innodb_undo_logs'; VARIABLE_VALUE 128 128 Expected SELECT @@innodb_undo_logs = @@GLOBAL.innodb_undo_logs; @@innodb_undo_logs = @@GLOBAL.innodb_undo_logs 1 1 Expected SELECT COUNT(@@innodb_undo_logs); COUNT(@@innodb_undo_logs) 1 1 Expected SELECT COUNT(@@local.innodb_undo_logs); ERROR HY000: Variable 'innodb_undo_logs' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@SESSION.innodb_undo_logs); ERROR HY000: Variable 'innodb_undo_logs' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT innodb_undo_logs = @@SESSION.innodb_undo_logs; ERROR 42S22: Unknown column 'innodb_undo_logs' in 'field list' Begin bug 13604034 select @@innodb_undo_logs; @@innodb_undo_logs 128 128 Expected set global innodb_undo_logs = 129; Warnings: Warning 1292 Truncated incorrect innodb_undo_logs value: '129' Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html select @@innodb_undo_logs; @@innodb_undo_logs 128 128 Expected set global innodb_undo_logs = 0; Warnings: Warning 1292 Truncated incorrect innodb_undo_logs value: '0' Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html select @@innodb_undo_logs; @@innodb_undo_logs 1 1 Expected set global innodb_undo_logs = -1; Warnings: Warning 1292 Truncated incorrect innodb_undo_logs value: '-1' Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html select @@innodb_undo_logs; @@innodb_undo_logs 1 1 Expected set global innodb_undo_logs = 50; Warnings: Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html select @@innodb_undo_logs; @@innodb_undo_logs 50 50 Expected set global innodb_undo_logs = default; Warnings: Warning 131 The parameter innodb_undo_logs is deprecated and may be removed in future releases. Please use innodb_rollback_segments instead. See http://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html select @@innodb_undo_logs; @@innodb_undo_logs 128 128 Expected End bug 13604034 # restart: --innodb-undo-logs=100 SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='innodb_undo_logs'; VARIABLE_VALUE 100 100 Expected