I have use docker to build elasticsearch cluster, when build the container, must config the memory of container by –memory.
I know es‘s jvm must half of the container, and less than 32g. The lucene will use the other memory in container in buffer/cache.
So, in the docker container how many memeory could config, if the es‘s jvm config 32g，the container must config more than 64g （the machine have enough memory）？
I know docker use cgroup，but i don’t know cgroup whether limit the buffer/cache