ruanhang1993 commented on code in PR #3490:
URL: https://github.com/apache/flink-cdc/pull/3490#discussion_r1698329050


##########
flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-mysql/src/main/java/org/apache/flink/cdc/connectors/mysql/factory/MySqlDataSourceFactory.java:
##########
@@ -243,6 +271,14 @@ private static List<String> getTableList(MySqlSourceConfig 
sourceConfig, Selecto
                 .collect(Collectors.toList());
     }
 
+    private static List<ObjectPath> getChunkKeyColumnTableList(
+            MySqlSourceConfig sourceConfig, Selectors selectors) {
+        return MySqlSchemaUtils.listTables(sourceConfig, null).stream()

Review Comment:
   Could we invoke `listTables` once and filter tables in the same list for 
each selector?



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