elasticsearch exporter used too much memory ,is it normal

[sunfloweryumi]

version：elasticsearch_exporter-1.5.0.linux
config ：elasticsearch_exporter-1.5.0.linux/elasticsearch_exporter --es.all --es.indices --es.cluster_settings --es.indices_settings --es.shards --es.snapshots --es.timeout=10s --es.uri xxx
my question: elasticsearch_exporter used 4.5G resident memory and 5G memory, is it normal?