local_id oid (references pg_replication_origin.roident)

internal node identifier

external_id text (references pg_replication_origin.roname)

external node identifier

remote_lsn pg_lsn

The origin node's LSN up to which data has been replicated.

local_lsn pg_lsn

This node's LSN at which remote_lsn has been replicated. Used to flush commit records before persisting data to disk when using asynchronous commits.