Thats a great question.

So, yes my thought is that it would throw an exception, but it should be a
custom REEF exception since different file system implementations can throw
different exceptions -- and I don't think the app developer should be
responsible for handling exceptions from Azure, HDFS, etc. So the
underlying file system implementation should catch the expected exception
but then throw or wrap the exception into a common REEF exception like
FileOperationException or FileCopyException. The implementation can also
add additional info into the exception via the message if needed.
On Wed, Jul 11, 2018 at 11:16 PM, Julia Wang (QIUHE) <
[EMAIL PROTECTED]lid> wrote: