You are right, that is currently missing in the Scala API. Would be good to
add this, for feature completeness in the Scala API.
As a workaround for now: Can you access the Java IterativeDataSet from the
Scala data set, and register it there?
Greetings,
Stephan
On Thu, Jan 28, 2016 at 11:05 PM, Fridtjof Sander <
fsan...@mailbox.tu-berlin.de> wrote:
> Hi,
>
> I want to register a custom aggregation convergence criterion to a bulk
> iteration and I want to use the scala API.
> It appears to me that this is not possible at the moment, right?
>
> The AggregatorRegistry is exposed by IterativeDataSet.java, which is
> hidden by DataSet.scala:
>
> def iterate(maxIterations: Int)(stepFunction: (DataSet[T]) =>
> DataSet[T]): DataSet[T] = {
> val iterativeSet =
> new IterativeDataSet[T](
> javaSet.getExecutionEnvironment,
> javaSet.getType,
> javaSet,
> maxIterations)
>
> val resultSet = stepFunction(wrap(iterativeSet))
> val result = iterativeSet.closeWith(resultSet.javaSet)
> wrap(result)
> }
>
> I am aware of the iterateWithTermination-possibility and it's a
> work-around for me, but I guess the aggregated convergence criterion would
> be more efficient.
> Am I missing something?
>
> Best,
> Fridtjof
>
