dawidwys commented on a change in pull request #10909: 
[FLINK-15686][sql-client] Use old type system in CollectStreamTableSink
URL: https://github.com/apache/flink/pull/10909#discussion_r368864607
 
 

 ##########
 File path: 
flink-table/flink-sql-client/src/main/java/org/apache/flink/table/client/gateway/local/CollectStreamTableSink.java
 ##########
 @@ -43,21 +43,32 @@
        private final TypeSerializer<Tuple2<Boolean, Row>> serializer;
        private final TableSchema tableSchema;
 
-       public CollectStreamTableSink(InetAddress targetAddress, int 
targetPort, TypeSerializer<Tuple2<Boolean, Row>> serializer, TableSchema 
tableSchema) {
+       public CollectStreamTableSink(
+                       InetAddress targetAddress,
+                       int targetPort,
+                       TypeSerializer<Tuple2<Boolean, Row>> serializer,
+                       TableSchema tableSchema) {
                this.targetAddress = targetAddress;
                this.targetPort = targetPort;
                this.serializer = serializer;
                this.tableSchema = 
TableSchemaUtils.checkNoGeneratedColumns(tableSchema);
 
 Review comment:
   I could not decide on those two options myself. 
   
   I went for the `getFieldNames` and `getFieldTypes` methods because I thought 
it will be easier to track it back when fixing the `Upsert/RetractTableSink` 
interfaces. I thought it will be more visible that we need to fix it here as 
well when removing those methods. I am afraid the old type system in 
`TableSchema` might stick around for a bit longer than these methods. Moreover 
it is also how we do it e.g. in Elasticsearch retract stream.
   
   But I am fine with switching over to `TableSchema` if you think it would be 
better that way.

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