ob_proxy_global_variables_version is used for internal communication between OBProxy and OBServer nodes. It specifies the latest version of global variables that an OBServer node should return to OBProxy.
Attribute |
Description |
|---|---|
| Parameter type | int |
| Default Value | 0 |
| Value range | [0, INT64_MAX) |
| Effective Scope | Session |
| Modifiable | This variable can be specified when creating a tenant, but cannot be modified via SQL statements after the tenant is created. For more information, see Set variables. |
| Visible | No |
The following example shows how to use the SELECT statement to return the latest version number of the current global variable:
obclient> SELECT @@ob_proxy_global_variables_version;