SYSTEM
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. |
WOS_USED_BYTES
|
INTEGER
|
The WOS size in bytes (cluster-wide). |
WOS_ROW_COUNT
|
INTEGER
|
The number of rows in WOS (cluster-wide). |
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 (WOS + ROS) (cluster-wide). |
TOTAL_ROW_COUNT
|
INTEGER
|
The total number of rows (WOS + ROS) (cluster-wide). |