ADMIN SHOW REPLICA STATUS

description

该语句用于展示一个表或分区的副本状态信息

语法:

ADMIN SHOW REPLICA STATUS FROM [db_name.]tbl_name [PARTITION (p1, ...)]
[where_clause];
where_clause:
WHERE STATUS [!]= "replica_status"
replica_status:
OK:             replica 处于健康状态
DEAD:           replica 所在 Backend 不可用
VERSION_ERROR:  replica 数据版本有缺失
SCHEMA_ERROR:   replica 的 schema hash 不正确
MISSING:        replica 不存在

example

  1. 查看表全部的副本状态

    ADMIN SHOW REPLICA STATUS FROM db1.tbl1;
  2. 查看表某个分区状态为 VERSION_ERROR 的副本

    ADMIN SHOW REPLICA STATUS FROM tbl1 PARTITION (p1, p2)
    WHERE STATUS = "VERSION_ERROR";
  3. 查看表所有状态不健康的副本

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

keyword

ADMIN,SHOW,REPLICA,STATUS