Error of impala query empty parquet file

[yu feng]

Hi all,

   I always have a query error when I query a parquet table and the table
have a empty parquet file, which means the files only have footer
information and do not have any row group.

I check the code and find the code:

  if (file_metadata_.row_groups.empty()) {
    return Status(
        Substitute("Invalid file. This file: $0 has no row groups",
filename()));
  }

I want to modify the logic, If find a no-row-group file, I want to skip the
scan range and do not return any row-batch from the parquet-scanner, Is it
right to doing like this, and do you have some another suggestion about
the situation？

Thanks a lots