Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/4135#discussion_r122487052 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/schema/StreamTableSourceTable.scala --- @@ -39,6 +39,9 @@ class StreamTableSourceTable[T]( val fieldCnt = fieldNames.length val rowtime = tableSource match { + case nullTimeSource : DefinedRowtimeAttribute if nullTimeSource.getRowtimeAttribute == null => None + case emptyStringTimeSource : DefinedRowtimeAttribute if emptyStringTimeSource.getRowtimeAttribute.trim.equals("") => + throw TableException("The name of the rowtime attribute must not be empty.") case timeSource: DefinedRowtimeAttribute if timeSource.getRowtimeAttribute != null => --- End diff -- The `if` condition can be removed. Then it should be fine.
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