The gp_stat_replication
view contains replication statistics of the walsender
process that is used for Greenplum Database Write-Ahead Logging (WAL) replication when master or segment mirroring is enabled.
column | type | references | description |
---|---|---|---|
gp_segment_id |
integer | Unique identifier of a segment (or master) instance. | |
pid |
integer | Process ID of the walsender backend process. |
|
usesysid |
oid | User system ID that runs the walsender backend process. |
|
usename |
name | User name that runs the walsender backend process. |
|
application_name |
text | Client application name. | |
client_addr |
inet | Client IP address. | |
client_hostname |
text | Client host name. | |
client_port |
integer | Client port number. | |
backend_start |
timestamp | Operation start timestamp. | |
backend_xmin |
xid | The current backend's xmin horizon. |
|
state |
text | walsender state. The value can be:startup backup catchup streaming |
|
sent_location |
text | walsender xlog record sent location. |
|
write_location |
text | walreceiver xlog record write location. |
|
flush_location |
text | walreceiver xlog record flush location. |
|
replay_location |
text | Master standby or segment mirror xlog record replay location. | |
sync_priority |
integer | Priority. The value is 1 . |
|
sync_state |
text | walsender synchronization state. The value is sync . |
|
sync_error |
text | walsender synchronization error. none if no error. |
Parent topic: System Catalogs Definitions