SET @start_global_value = @@global.ROCKSDB_TABLE_CACHE_NUMSHARDBITS;
SELECT @start_global_value;
@start_global_value
6
"Trying to set variable @@global.ROCKSDB_TABLE_CACHE_NUMSHARDBITS to 444. It should fail because it is readonly."
SET @@global.ROCKSDB_TABLE_CACHE_NUMSHARDBITS   = 444;
ERROR HY000: Variable 'rocksdb_table_cache_numshardbits' is a read only variable
