问题
Does Flink supports Side Outputs feature in Dataset(Batch Api) ? If not, how to handle valid and invalid records when loading from file ?
回答1:
You can always do something like this:
DataSet<EventOrInvalidRecord> goodAndBadTogether = input.map(new CreateObjectIfPossible())
goodAndBadTogether.filter(new KeepOnlyGood())...
goodAndBadTogether.filter(new KeepOnlyBad())...
Another reasonable option in some cases is to go ahead and use the DataStream API, even if you don't have streaming sources.
来源：https://stackoverflow.com/questions/60014914/apache-flink-dataset-api-side-outputs