MaxGekk commented on code in PR #44358:
URL: https://github.com/apache/spark/pull/44358#discussion_r1427861499


##########
common/utils/src/main/resources/error/error-classes.json:
##########
@@ -1096,6 +1096,79 @@
     ],
     "sqlState" : "38000"
   },
+  "FAILED_JDBC" : {

Review Comment:
   JDBC means Java Database **Connectivity**, the connectivity might fails at 
any time, ops or while establishing connections or while keeping it. For 
instance, this is real example:
   ```
   org.postgresql.util.PSQLException: The connection attempt failed.
   at 
org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:331)
   at 
org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
   at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:223)
   ```



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