ADMIN SHOW REPLICA STATUS

Description

This statement is used to show the status of replicas for a table or a partition.

Syntax:

ADMIN SHOW REPLICA STATUS FROM [db_name.]tbl_name [PARTITION (p1, ...)]
[where_clause];

where_clause:
WHERE STATUS [!]= "replica_status"

replica_status:
OK:            The replica is healthy
DEAD:          The Backend of replica is not available
VERSION_ERROR: The replica data version is missing
SCHEMA_ERROR:  The schema hash of replica is incorrect
MISSING:       The replica does not exist

Examples

1. View the status of all replicas of the table.

   ADMIN SHOW REPLICA STATUS FROM db1.tbl1;

2. View the replica of a partition with the status of VERSION_ERROR.

   ADMIN SHOW REPLICA STATUS FROM tbl1 PARTITION (p1, p2)
   WHERE STATUS = "VERSION_ERROR";

3. View all unhealthy replicas of the table.

   ADMIN SHOW REPLICA STATUS FROM tbl1
   WHERE STATUS != "OK";