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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/06/22 12:53:12 UTC
[GitHub] [shardingsphere] RaigorJiang commented on a diff in pull request #18517: Add show result write_data_source_query_enable for show readwrite_splitting rules
RaigorJiang commented on code in PR #18517:
URL: https://github.com/apache/shardingsphere/pull/18517#discussion_r903704720
##########
docs/document/content/user-manual/shardingsphere-proxy/distsql/syntax/rql/rule-query/readwrite-splitting.en.md:
##########
@@ -11,46 +11,36 @@ SHOW READWRITE_SPLITTING RULES [FROM databaseName]
## Return Value Description
-| Column | Description |
-| --------------------------- | ------------------------------------ |
-| name | Rule name |
-| auto_aware_data_source_name | Auto-Aware discovery data source name (Display configuration dynamic readwrite splitting rules) |
-| write_data_source_name | Write data source name |
-| read_data_source_names | Read data source name list |
-| load_balancer_type | Load balance algorithm type |
-| load_balancer_props | Load balance algorithm parameter |
+| Column | Description |
+| ------------------------------- | ------------------------------------ |
+| name | Rule name |
+| auto_aware_data_source_name | Auto-Aware discovery data source name (Display configuration dynamic readwrite splitting rules) |
+| write_data_source_query_enabled | all replicas offline, primary data source whether provide query (Display configuration dynamic readwrite splitting rules)|
+| write_data_source_name | Write data source name |
+| read_data_source_names | Read data source name list |
+| load_balancer_type | Load balance algorithm type |
+| load_balancer_props | Load balance algorithm parameter |
## Example
*Static Readwrite Splitting Rules*
```sql
mysql> show readwrite_splitting rules;
-+------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| name | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
-+------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| ms_group_0 | | ds_primary | ds_slave_0, ds_slave_1 | random | |
-+------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-1 row in set (0.00 sec)
-```
-
-*Dynamic Readwrite Splitting Rules*
-```sql
-mysql> show readwrite_splitting rules from readwrite_splitting_db;
-+--------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| name | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
-+--------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| readwrite_ds | ms_group_0 | | | random | read_weight=2:1 |
-+-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
++--------------+-----------------------------+---------------------------------+------------------------+------------------------+--------------------+
+| name | auto_aware_data_source_name | write_data_source_query_enabled | write_data_source_name | read_data_source_names | load_balancer_type |
++--------------+-----------------------------+---------------------------------+------------------------+------------------------+--------------------+
+| ms_group_0 | | | ds_primary | ds_slave_0,ds_slave_1 | RANDOM |
++--------------+-----------------------------+---------------------------------+------------------------+------------------------+--------------------+
1 row in set (0.01 sec)
```
-*Static Readwrite Splitting Rules And Dynamic Readwrite Splitting Rules*
+*Dynamic Readwrite Splitting Rules*
```sql
mysql> show readwrite_splitting rules from readwrite_splitting_db;
-+--------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| name | auto_aware_data_source_name | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
-+--------------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
-| readwrite_ds | ms_group_0 | write_ds | read_ds_0, read_ds_1 | random | read_weight=2:1 |
-+-------+-----------------------------+------------------------+------------------------+--------------------+---------------------+
++----------------+-----------------------------+---------------------------------+------------------------+------------------------+--------------------+---------------------+
+| name | auto_aware_data_source_name | write_data_source_query_enabled | write_data_source_name | read_data_source_names | load_balancer_type | load_balancer_props |
++----------------+-----------------------------+---------------------------------+------------------------+------------------------+--------------------+---------------------+
+| readwrite_ds | ms_group_0 | true | ds_primary | ds_slave_0,ds_slave_1 | random | read_weight=2:1 |
Review Comment:
Hi @zjcnb , the random load balancer dose not need props.
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