SET @start_global_value = @@global.ROCKSDB_SUPPORTED_COMPRESSION_TYPES;
"Trying to set variable @@global.ROCKSDB_SUPPORTED_COMPRESSION_TYPES to 444. It should fail because it is readonly."
SET @@global.ROCKSDB_SUPPORTED_COMPRESSION_TYPES   = 444;
ERROR HY000: Variable 'rocksdb_supported_compression_types' is a read only variable