Hello, is there any documentation how can I use ContextualEvalFunc? My intention is to precompute output schema and pass those information - ideally one JSON string/file from the fronted into the backend, then I can generate code inside outputSchema method.
https://github.com/apache/incubator-datafu/blob/master/datafu-pig/src/main/java/datafu /pig/util/ContextualEvalFunc.java Thank you Best, John
