[GitHub] [shardingsphere] lanchengx opened a new issue #15501: `scaling is not enabled` exception occurs when executing `ALTER SHARDING TABLE RULE`

Fri, 18 Feb 2022 01:35:44 -0800 


lanchengx opened a new issue #15501:
URL: https://github.com/apache/shardingsphere/issues/15501


   ## Bug Report
   
   ### Which version of ShardingSphere did you use?
   
   Master
   
   ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
   
   ShardingSphere-Proxy
   
   ### Expected behavior
   
   Successfully modified
   
   ### Actual behavior
   
   `scaling is not enabled exception` occurs
   
   <img width="1210" alt="image" 
src="https://user-images.githubusercontent.com/52209337/154654949-8248afe8-3a87-43e2-a767-c325f8b6feb4.png";>
   
   ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule 
configuration, when exception occur etc.
   
   ```shell
   mysql> ADD RESOURCE ds_0 (
       HOST=127.0.0.1,
       PORT=3306,
       DB=demo_ds_0,
       USER=root,
       PASSWORD=root
   );
   Query OK, 0 rows affected (0.23 sec)
    
   mysql> ADD RESOURCE ds_1 (
       HOST=127.0.0.1,
       PORT=3306,
       DB=demo_ds_0,
       USER=root,
       PASSWORD=root
   );
   Query OK, 0 rows affected (0.16 sec)
    
   mysql> CREATE SHARDING TABLE RULE t_order (
   RESOURCES(ds_0,ds_1),
   SHARDING_COLUMN=order_id,TYPE(NAME=hash_mod,PROPERTIES("sharding-count"=4)),
   KEY_GENERATE_STRATEGY(COLUMN=another_id,TYPE(NAME=snowflake))
   );
   Query OK, 0 rows affected (0.12 sec)
    
   mysql> Alter SHARDING TABLE RULE t_order (
   RESOURCES(ds_0),
   SHARDING_COLUMN=order_id,TYPE(NAME=hash_mod,PROPERTIES("sharding-count"=4)),
   KEY_GENERATE_STRATEGY(COLUMN=another_id,TYPE(NAME=snowflake))
   );
   1997 - Runtime exception: [scaling is not enabled]
   
   ```
   


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