Hi all,
Sorry for posting this twice,
I need to know how to group by several column attributes (e.g.,List<Column
> groupByAttributes) a dataset (dataset) and then count the occurrences of
associated grouped rows, how do i achieve that ?
I tried through the following code:
> Dataset<Row> groupedRows = dataset.withColumn("freqs",
> count("*").over(Window.partitionBy(groupByAttributes.toArray(new
> Column[groupByAttributes.size()]))));
Would that do it?
To note: I want the "grouped" rows to be separate for the subsequent
transformations so a groupBY is not adequate in this case.
