mymeiyi opened a new pull request, #26512:
URL: https://github.com/apache/doris/pull/26512
## Proposed changes
1. Use prepared protocol `useServerPrepStmts=true` and connect to follower FE
2. Use prepared statement to execute a ddl stmt such as `drop database`
3. follower FE forward this command to master FE, and it's not prepared
protocol
4. then the client got the following exception:
```
java.sql.SQLNonTransientConnectionException: msg: Not supported such
prepared statement
at
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)
at
com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
at
com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:633)
at
com.mysql.cj.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:417)
at
com.mysql.cj.jdbc.ClientPreparedStatement.execute(ClientPreparedStatement.java:371)
```
When and connect to follower FE, it forward the sql to master FE and
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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