title: AWS GLUE job failure working with partitioned Parquet files in nested s3 folders
body: <p>I get the following error when running a GLUE job over partitioned parquet files 
  Unable to infer a schema for Parquet. It must be specified manually</p>
  
  <p>I have set up my crawler and successfully obtained the schema for my parquet files. I can view the data in Athena. I have created the schema manually on my target Redshift.</p>
  
  <p>I can load the files via GLUE into Redshift if all my data is in one folder only.
   BUT when I point at a folder  that has nested folders, e.g. folder X - has 04  and 05  - the GLUE job fails with the message
  Unable to infer a schema for Parquet. It must be specified manually</p>
  
  <p>Which is strange as it works if I put all these files into the same folder?</p>