@Override
    public GroupCoordinatorMetricsShard newMetricsShard(SnapshotRegistry snapshotRegistry, TopicPartition tp) {
        return new GroupCoordinatorMetricsShard(snapshotRegistry, globalSensors, tp);
    }
Global sensors. These are shared across all metrics shards.
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/metrics/GroupCoordinatorMetrics.java