openGauss WDR:未生成快照

Question

功能模块WDR：

操作步骤及问题现象：

1、gs_guc reload -N all -I all -c "enable_wdr_snapshot=on" 
2、select create_wdr_snapshot(); 
3、select * from snapshot.snapshot;   There was no result, nor after the restart.

截图信息：

openGauss=# select name,setting from pg_settings where name like '%wdr%'; name | setting -----------------------------+--------- enable_wdr_snapshot | on wdr_snapshot_interval | 60 wdr_snapshot_query_timeout | 100 wdr_snapshot_retention_days | 8 (4 rows) 
openGauss=# select create_wdr_snapshot(); create_wdr_snapshot ----------------------------------------- WDR snapshot request has been submitted (1 row) 
openGauss=# select * from snapshot.snapshot; snapshot_id | start_ts | end_ts -------------+----------+-------- (0 rows)

Answer 1

如果没有快照，请查看pg_log……中的日志