Add an explanatory comment on why eventual rollback actions are ignored

Author: findinpath

plugin/trino-ignite/src/main/java/io/trino/plugin/ignite/IgniteMetadata.java

@@ -218,6 +218,7 @@ public void createTable(ConnectorSession session, ConnectorTableMetadata tableMe
         if (saveMode == REPLACE) {
             throw new TrinoException(NOT_SUPPORTED, "This connector does not support replacing tables");
         }
+        // No rollback action is needed when creating an empty table
         igniteClient.beginCreateTable(session, tableMetadata, _ -> {});
     }