Add use_fix_replica session variable, so that we can be better debug replica inconsistencies problem.
If use_fix_replica default is -1, which means not fix,
else we will choose the {use_fix_replica} smallest replica.
Add use_fix_replica session variable, so that we can be better debug replica inconsistencies problem.
If use_fix_replica default is -1, which means not fix,
else we will choose the {use_fix_replica} smallest replica.