[root@172 ~]# su hadoop
[hadoop@172 ~]$ impala-shel.sh -i $host:27001

[$host:27001 ] > create table record(id int, name string) row format delimited fields terminated by ',' stored as textfile location 'cosn://$bucketname/';
Query: create table record(id int, name string) row format delimited fields terminated by ',' stored as textfile location 'cosn://$bucketname/'
Fetched 0 row(s) in 3.07s
Here, `$bucketname` is the name plus path of your COS bucket. If you use CHDFS, replace the `location` value with `ofs://$mountname/`, where `$mountname` is your CHDFS instance mount address plus path.
View the table information and confirm that `location` is the COS path.
[$host:27001 ] > show create table record2;
Query: show create table record2
+----------------------------------------------------------------------+
| result                                                               |
+----------------------------------------------------------------------+
| CREATE TABLE default.record2 (                                       |
|   id INT,                                                            |
|   name STRING                                                        |
| )                                                                    |
| ROW FORMAT DELIMITED FIELDS TERMINATED BY ','                        |
| WITH SERDEPROPERTIES ('field.delim'=',', 'serialization.format'=',') |
| STORED AS TEXTFILE                                                   |
| LOCATION 'cosn://$bucketname'                                 |
| TBLPROPERTIES ('numFiles'='19', 'totalSize'='1870')                  |
+----------------------------------------------------------------------+
Fetched 1 row(s) in 5.90s

[$host:27001] > insert into record values(1,"test");
Query: insert into record values(1,"test")
Query submitted at: 2020-08-03 11:29:16 (Coordinator: http://$host:27004)
Query progress can be monitored at: http:/$host:27004/query_plan?query_id=b246d3194efb7a8f:bc60721600000000
Modified 1 row(s) in 0.64s

[$host:27001] > select * from record;
Query: select * from record
Query submitted at: 2020-08-03 11:29:31 (Coordinator: http://172.30.1.136:27004)
Query progress can be monitored at: http://$host:27004/query_plan?query_id=8148da96f8c0d369:4b26432a00000000
+----+---------+
| id | name    |
+----+---------+
| 1  | test    |
+----+---------+
Fetched 1 row(s) in 0.37s