ListInstanceGroups

Source: src/AWS/EMR/ListInstanceGroups.ts

Runtime binding for elasticmapreduce:ListInstanceGroups — lists the bound cluster’s instance groups (instance-group clusters only) with requested/running counts — the ids feed ModifyInstanceGroups and PutAutoScalingPolicy.

Inspecting the Cluster

const listInstanceGroups = yield* AWS.EMR.ListInstanceGroups(cluster);

const { InstanceGroups } = yield* listInstanceGroups();
const core = InstanceGroups?.find(
  (group) => group.InstanceGroupType === "CORE",
);