database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-03 09:13:20 +03:00
Code Activity

Add replication command READ_REPLICATION_SLOT

Browse Source 
The command is supported for physical slots for now, and returns the
type of slot, its restart_lsn and its restart_tli.

This will be useful for an upcoming patch related to pg_receivewal, to
allow the tool to be able to stream from the position of a slot, rather
than the last WAL position flushed by the backend (as reported by
IDENTIFY_SYSTEM) if the archive directory is found as empty, which would
be an advantage in the case of switching to a different archive
locations with the same slot used to avoid holes in WAL segment
archives.

Author: Ronan Dunklau
Reviewed-by: Kyotaro Horiguchi, Michael Paquier, Bharath Rupireddy
Discussion: https://postgr.es/m/18708360.4lzOvYHigE@aivenronan
This commit is contained in:
Michael Paquier
2021-10-25 07:40:42 +09:00
parent 70bef49400
commit b4ada4e19f
9 changed files with 224 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/include/nodes/nodes.h
View File

@@ -496,6 +496,7 @@ typedef enum NodeTag
T_BaseBackupCmd,
T_CreateReplicationSlotCmd,
T_DropReplicationSlotCmd,
T_ReadReplicationSlotCmd,
T_StartReplicationCmd,
T_TimeLineHistoryCmd,
T_SQLCmd,