Note
This view is available starting with V4.3.4.
Purpose
This view displays the relevant metrics of various types of cached data in the local cache of each OBServer node for all tenants in the shared storage mode.
Note
This view is available only in the shared storage (Shared-Storage, SS) mode. In the shared-nothing (Shared-Nothing, SN) mode, the query result is empty.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | The IP address of the OBServer node |
| SVR_PORT | bigint(20) | NO | The port number of the OBServer node |
| TENANT_ID | bigint(20) | NO | The tenant ID |
| CACHE_NAME | varchar(128) | NO | The name of the cache for a type of data in the local cache. The following types are supported:
|
| PRIORITY | bigint(20) | NO | The cache priority. The higher the value, the higher the priority. This field is not currently used, and its value is 0 by default. |
| HIT_RATIO | decimal(38,3) | NO | The cache hit rate |
| TOTAL_HIT_CNT | bigint(20) | NO | The total number of cache hits |
| TOTAL_MISS_CNT | bigint(20) | NO | The total number of cache misses |
| HOLD_SIZE | bigint(20) | NO | The total size of objects stored in the cache, in bytes |
| ALLOC_DISK_SIZE | bigint(20) | NO | The allocated disk space, in bytes |
| USED_DISK_SIZE | bigint(20) | NO | The used disk space (disk space may be allocated but not yet used), in bytes |
| USED_MEM_SIZE | bigint(20) | NO | The used memory space, in bytes |