Question about flink batch python api's print

[zenglong chen]

Hello,guys.

I use python print in flink map function to see whether i get the data,but i didn't see anything in client or path log/***.out,just Program execution finished.

Is there any way to solve this and see print?

Besides,I try to use raise Exception in Map() and flink still complete as finished!!!Is it a bug?Can flink catch python's error message?