[GitHub] [iotdb] SteveYurongSu commented on issue #4637: Grafana-IoTDB java.sql.SQLException if IOTDB version > 0.12.2

[GitBox <gi...@apache.org>]

SteveYurongSu commented on issue #4637:
URL: https://github.com/apache/iotdb/issues/4637#issuecomment-1001412203


   Hi Jeffrey, thanks for reporting this! 
   
   I found this in the log:
   
   ```shell
   Caused by: java.sql.SQLException: Does not support setReadOnly
           at org.apache.iotdb.jdbc.IoTDBConnection.setReadOnly(IoTDBConnection.java:319) ~[iotdb-jdbc-0.12.4.jar!/:0.12.4]
           at com.zaxxer.hikari.pool.PoolBase.setupConnection(PoolBase.java:372) ~[HikariCP-2.5.1.jar!/:na]
           at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:346) ~[HikariCP-2.5.1.jar!/:na]
           at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:506) ~[HikariCP-2.5.1.jar!/:na]
           ... 74 common frames omitted
   ```
   
   Has the method `setReadOnly` ever been called by your application? The method is not supported by the `IoTDBConnection`. 
   
   The IoTDB will automatically set the status to ReadOnly only in the event of a system failure. In other cases, we should not set the system state to read-only.


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