How to free Memory after testing

[RuifMaxx]

After finished the YCSB test on redis cluster on kubernetes StatefulSet. The memory used by the container is still very high, how to free MEM after testing.

for example, after I run this command

./bin/ycsb.sh load redis -s -P workloads/workload_read -p redis.host=172.20.2.72 -p redis.port=6379 -threads 100 -p redis.cluster=true

workload_read is

recordcount=10000000
operationcount=10000000
workload=com.yahoo.ycsb.workloads.CoreWorkload
readallfields=true
readproportion=1
updateproportion=0
scanproportion=0
insertproportion=0
requestdistribution=zipfian

After finishing test for a while, I got:

$ kubectl top pod
NAME                                  CPU(cores)   MEMORY(bytes)   
centos7-deployment-7ddccf8767-c5tkg   0m           176Mi           
redis-app-0                           2m           1059Mi          
redis-app-1                           2m           1055Mi          
redis-app-2                           2m           1581Mi          
redis-app-3                           2m           1051Mi          
redis-app-4                           2m           1059Mi          
redis-app-5                           2m           1052Mi          
redis-app-6                           2m           1059Mi          
redis-app-7                           2m           1056Mi          

[busbey]

that will be up to redis tooling. YCSB doesn't delete the dataset stored in a load or run. Since Redis is an in-memory store the dataset will still be present in memory.