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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2020/02/13 05:59:22 UTC
[GitHub] [incubator-shardingsphere] gxgmy521 opened a new issue #4280: Why
the readOnly filed in the ShardingConnection is true.
gxgmy521 opened a new issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280
## Question
When get a shardingConnection , the `readOnly` filed is aways true,however ,the same filed in the pthysical datasource connection is false. Can you explain why in the `AbstractConnectionAdapter` class the readOnly is true
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[GitHub] [incubator-shardingsphere] ssxlulu commented on issue #4280: Why
the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
ssxlulu commented on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-591213529
I have researched some documents. The default value of read only in [MySQL](https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_transaction_read_only) or [PostgreSQL](https://www.postgresql.org/docs/current/runtime-config-client.html) is false.Like the following pictures show:
MySQL:
PostgreSQL:
So, I think the read only value in AbstractConnectionAdapter should be false as well by default.
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[GitHub] [incubator-shardingsphere] terrymanu commented on issue #4280: Why
the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
terrymanu commented on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-590693842
Thank you, assigned @ssxlulu
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[GitHub] [incubator-shardingsphere] gxgmy521 edited a comment on issue
#4280: Why the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
gxgmy521 edited a comment on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-587002212
You can see in the https://github.com/apache/incubator-shardingsphere/blob/master/sharding-jdbc/sharding-jdbc-core/src/main/java/org/apache/shardingsphere/shardingjdbc/jdbc/adapter/AbstractConnectionAdapter.java
the ·`readOnly`value of the AbstractConnectionAdapter is set to true
```
private boolean readOnly = true;
```
However when we get a connection from the Hikari or Druid. the default value is false。On the User side the readOnly value is true( get from the logic ShardingConnection), On the datasource sider, the value is false (get from the physical datasource connection).
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[GitHub] [incubator-shardingsphere] gxgmy521 commented on issue #4280: Why
the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
gxgmy521 commented on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-587002212
You can see in the https://github.com/apache/incubator-shardingsphere/blob/master/sharding-jdbc/sharding-jdbc-core/src/main/java/org/apache/shardingsphere/shardingjdbc/jdbc/adapter/AbstractConnectionAdapter.java
the ·`readOnly`value of the AbstractConnectionAdapter is set to true
```
private boolean readOnly = true;
```
However when we get a connection from the Hikari or Druid. the default value is false。
----------------------------------------------------------------
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[GitHub] [incubator-shardingsphere] gxgmy521 edited a comment on issue
#4280: Why the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
gxgmy521 edited a comment on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-587002212
You can see in the https://github.com/apache/incubator-shardingsphere/blob/master/sharding-jdbc/sharding-jdbc-core/src/main/java/org/apache/shardingsphere/shardingjdbc/jdbc/adapter/AbstractConnectionAdapter.java
the ·`readOnly`value of the AbstractConnectionAdapter is set to true
```
private boolean readOnly = true;
```
However when we get a connection from the Hikari or Druid. the default value is false。On the User side the readOnly value is true( get from the logic ShardingConnection), On the database side, the value is false (get from the physical datasource connection).
----------------------------------------------------------------
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[GitHub] [incubator-shardingsphere] terrymanu commented on issue #4280: Why
the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
terrymanu commented on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-586993018
Any hints to reproduce it?
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[GitHub] [incubator-shardingsphere] ssxlulu commented on issue #4280: Why
the readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
ssxlulu commented on issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280#issuecomment-590692297
It may be a problem about readonly transaction, I will research it further.
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[GitHub] [incubator-shardingsphere] terrymanu closed issue #4280: Why the
readOnly filed in the ShardingConnection is true.
Posted by GitBox <gi...@apache.org>.
terrymanu closed issue #4280: Why the readOnly filed in the ShardingConnection is true.
URL: https://github.com/apache/incubator-shardingsphere/issues/4280
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