How to set zero lookup rate? about ycsb-cpp HOT 2 CLOSED

$ ./ycsb -load -db leveldb -P workloads/workloada -P leveldb/leveldb.properties -p recordcount=10000 -p threadcount=1 -s
2023-08-19 18:15:54 0 sec: 0 operations;
2023-08-19 18:15:54 0 sec: 10000 operations; [INSERT: Count=10000 Max=40.29 Min=1.71 Avg=3.33 90=5.21 99=7.56 99.9=19.63 99.99=28.93]
Load runtime(sec): 0.212605
Load operations(ops): 10000
Load throughput(ops/sec): 47035.5

$ ./ycsb -run -db leveldb -P workloads/workloada -P leveldb/leveldb.properties -p recordcount=20000 -p threadcount=1 -s
2023-08-19 18:16:03 0 sec: 0 operations;
2023-08-19 18:16:03 0 sec: 10000 operations; 
[READ: Count=2490 Max=49.25 Min=2.47 Avg=3.63 90=4.09 99=6.46 99.9=10.21 99.99=49.25] 
[UPDATE: Count=2415 Max=35.84 Min=4.56 Avg=6.29 90=7.29 99=9.54 99.9=23.41 99.99=35.84] 
[READ-FAILED: Count=2506 Max=15.86 Min=0.29 Avg=0.91 90=1.06 99=1.35 99.9=1.77 99.99=15.86]
[UPDATE-FAILED: Count=2589 Max=24.13 Min=0.56 Avg=0.93 90=1.06 99=1.32 99.9=3.59 99.99=24.13]
Run runtime(sec): 0.128209
Run operations(ops): 10000
Run throughput(ops/sec): 77997.9