dailai commented on code in PR #7261:
URL: https://github.com/apache/seatunnel/pull/7261#discussion_r1694760837


##########
seatunnel-connectors-v2/connector-jdbc/src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/catalog/AbstractJdbcCatalog.java:
##########
@@ -277,15 +285,24 @@ public List<String> listDatabases() throws 
CatalogException {
 
     @Override
     public boolean databaseExists(String databaseName) throws CatalogException 
{
-        checkArgument(StringUtils.isNotBlank(databaseName));
-
-        return listDatabases().contains(databaseName);
+        if (StringUtils.isBlank(databaseName)) {
+            return false;
+        }
+        if (!SYS_DATABASES.isEmpty() && SYS_DATABASES.contains(databaseName)) {
+            return false;
+        }
+        return queryExists(
+                getUrlFromDatabaseName(databaseName), 
getDatabaseWithConditionSql(databaseName));

Review Comment:
   > Do we need to keep the rollback strategy? If Catalog does not support the 
`getDatabaseWithConditionSql` method, we can continue to use the old check way.
   
   I think it's no need to use this strategy because  all jdbc catalogs are 
supported this way.



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