SYSTEM
Monitors the overall state of the database.
Monitors the overall state of the database.
| Column Name | Data Type | Description |
|---|---|---|
CURRENT_EPOCH |
INTEGER |
The current epoch number. |
AHM_EPOCH |
INTEGER |
The AHM epoch number. |
LAST_GOOD_EPOCH |
INTEGER |
The smallest (min) of all the checkpoint epochs on the cluster. |
REFRESH_EPOCH |
INTEGER |
Deprecated, always set to -1. |
DESIGNED_FAULT_TOLERANCE |
INTEGER |
The designed or intended K-safety level. |
NODE_COUNT |
INTEGER |
The number of nodes in the cluster. |
NODE_DOWN_COUNT |
INTEGER |
The number of nodes in the cluster that are currently down. |
CURRENT_FAULT_TOLERANCE |
INTEGER |
The number of node failures the cluster can tolerate before it shuts down automatically. This is the current K-safety level. |
CATALOG_REVISION_NUMBER |
INTEGER |
The catalog version number. |
ROS_USED_BYTES |
INTEGER |
The ROS size in bytes (cluster-wide). |
ROS_ROW_COUNT |
INTEGER |
The number of rows in ROS (cluster-wide). |
TOTAL_USED_BYTES |
INTEGER |
The total storage in bytes across the database cluster. |
TOTAL_ROW_COUNT |
INTEGER |
The total number of rows across the database cluster. |