wuchong commented on a change in pull request #8109: 
[FLINK-12017][table-planner-blink] Support translation from Rank/Deduplicate to 
StreamTransformation
URL: https://github.com/apache/flink/pull/8109#discussion_r275105047
 
 

 ##########
 File path: 
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/runtime/utils/StreamingTestBase.scala
 ##########
 @@ -53,4 +55,8 @@ class StreamingTestBase extends AbstractTestBase {
     this.tEnv = StreamTableEnvironment.create(env)
   }
 
+  def writeToSink(table: Table, sink: TableSink[_]): Unit = {
 
 Review comment:
   I think we should avoid to use `writeToSink(table, sink)` in IT case. The 
logical in `writeToSink` should be placed in TableEnvironment, not a test util 
or test base. 
   
   Please Use `tEnv.writeToSink(table, sink)` or `Table.insertInto` instead.

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