Module distributed_time_constants

Constants

• DATANODE_LEASE_SECS
  When creating table or region failover, a target node needs to be selected. If the node’s lease has expired, the Selector will not select it.
• FLOWNODE_LEASE_SECS
• FRONTEND_HEARTBEAT_INTERVAL_MILLIS
  The frontend will also send heartbeats to Metasrv, sending an empty heartbeat every HEARTBEAT_INTERVAL_MILLIS * 6 seconds.
• HEARTBEAT_INTERVAL_MILLIS
  Heartbeat interval time (is the basic unit of various time).
• MAILBOX_RTT_SECS
  The default mailbox round-trip timeout.
• META_KEEP_ALIVE_INTERVAL_SECS
  In a lease, there are two opportunities for renewal.
• META_LEASE_SECS
  The lease seconds of metasrv leader.
• REGION_LEASE_SECS
  The lease seconds of a region. It’s set by 3 heartbeat intervals (HEARTBEAT_INTERVAL_MILLIS × 3), plus some extra buffer (1 second).