ob_route_policy

最終更新:2026-09-03 07:27:31

ob_route_policy specifies the routing strategy for selecting a replica within an OBServer node.

Attribute	Description
Type	ENUM
Default value	1
Value range	1 (`READONLY_ZONE_FIRST`): Requests are preferentially routed to the zone where a read-only replica resides. 2 (`ONLY_READONLY_ZONE`): Requests are routed only to the zone where a read-only replica resides. 3 (`UNMERGE_ZONE_FIRST`): Requests are preferentially routed to the zone where a replica not undergoing a major compaction resides. 4 (`UNMERGE_FOLLOWER_FIRST`): Requests are preferentially routed to a follower not undergoing a major compaction. 5 (`COLUMN_STORE_ONLY`): Requests are routed only to a columnstore replica.
Effective scope	Global Session
Modifiable	Yes. You can use the `SET` statement to modify the variable.

Examples

Session-level operation

obclient> SET ob_route_policy = 'READONLY_ZONE_FIRST';

or

obclient> SET ob_route_policy = 1;

Global-level operation

obclient> SET GLOBAL ob_route_policy = 'READONLY_ZONE_FIRST';

or

obclient> SET GLOBAL ob_route_policy = 1;

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