gh-66 don't use string format function
gh-66 don't use string format function

jaemyoun/YCSB,zyguan/ycsb,leschekhomann/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,brianfrankcooper/YCSB,manolama/YCSB,leschekhomann/YCSB,cricket007/YCSB,jaemyoun/YCSB,leschekhomann/YCSB,zyguan/ycsb,cricket007/YCSB,manolama/YCSB,ChristianNavolskyi/YCSB,manolama/YCSB,madhurihn/YCSB_ToyDB,leschekhomann/YCSB,cricket007/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,brianfrankcooper/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,manolama/YCSB,brianfrankcooper/YCSB,jaemyoun/YCSB,jaemyoun/YCSB,zyguan/ycsb,brianfrankcooper/YCSB,zyguan/ycsb,cricket007/YCSB