Constant common_meta::distributed_time_constants::FRONTEND_HEARTBEAT_INTERVAL_MILLIS

source ยท 
pub const FRONTEND_HEARTBEAT_INTERVAL_MILLIS: u64 = _; // 18_000u64
Expand description

The frontend will also send heartbeats to Metasrv, sending an empty heartbeat every HEARTBEAT_INTERVAL_MILLIS * 6 seconds.