dawidwys commented on code in PR #23601:
URL: https://github.com/apache/flink/pull/23601#discussion_r1373031168


##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/factories/TestValuesRuntimeFunctions.java:
##########
@@ -283,22 +293,29 @@ private abstract static class AbstractExactlyOnceSink 
extends RichSinkFunction<R
         private static final long serialVersionUID = 1L;
 
         protected final String tableName;
+        protected final DataType consumedDataType;
+        protected final DataStructureConverter converter;
+        protected transient ListState<Row> rawResultState;
+        protected transient List<Row> localRawResult;
 
-        protected transient ListState<String> rawResultState;
-        protected transient List<String> localRawResult;
-
-        protected AbstractExactlyOnceSink(String tableName) {
+        protected AbstractExactlyOnceSink(
+                String tableName, DataType consumedDataType, 
DataStructureConverter converter) {
             this.tableName = tableName;
+            this.consumedDataType = consumedDataType;
+            this.converter = converter;
         }
 
         @Override
         public void initializeState(FunctionInitializationContext context) 
throws Exception {
             this.rawResultState =
                     context.getOperatorStateStore()
-                            .getListState(new 
ListStateDescriptor<>("sink-results", Types.STRING));
+                            .getListState(
+                                    new ListStateDescriptor<>(
+                                            "sink-results",
+                                            
ExternalSerializer.of(consumedDataType, true)));

Review Comment:
   Maybe no tests, depend on this particular one.



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