PG_GET_SENDERS_CATCHUP_TIME

Startup: startup state.
Backup: backup state.
Catchup: catch-up state, which indicates that the standby node is catching up with the primary node.
Streaming: streaming replication state. When the standby node catches up with the primary node, the replication remains in this state.

PG_GET_SENDERS_CATCHUP_TIME displays catchup information of the currently active primary/standby instance sender thread on the DN. For details about the columns, see Table 1.

**Table 1** PG_GET_SENDERS_CATCHUP_TIME columns
Name	Type	Description
pid	bigint	Current sender thread ID
lwpid	integer	Current sender lwpid
local_role	text	Local role
peer_role	text	Peer role
state	text	Current sender's replication status Startup: startup state. Backup: backup state. Catchup: catch-up state, which indicates that the standby node is catching up with the primary node. Streaming: streaming replication state. When the standby node catches up with the primary node, the replication remains in this state.
type	text	Current sender type Wal: type that logs are written in advance. Data: data type.
catchup_start	timestamp with time zone	Startup time of a catchup task
catchup_end	timestamp with time zone	End time of the catchup task