libhdfs fails silently when hdfs extended acls are in use

# list files in a folder
hdfs.ls('/user/p-pparente/example')

['/user/p-pparente/example/1',
 '/user/p-pparente/example/2',
 '/user/p-pparente/example/3']

# using the standard hdfs CLI, set some extended acls
# hdfs dfs -setfacl -m user:analytics:rwx /user/p-pparente/example/1

# try to list files again, nothing shows!
hdfs.ls('/user/p-pparente/example')
[]

# remove the extended acl using the hdfs CLI
# hdfs dfs -setfacl -x user:analytics /user/p-pparente/example/1

# list again, and still nothing there because the extended ACLs have been set at least once
hdfs.ls('/user/p-pparente/example')
[]

# Remove the file from the directory entirely
# hdfs dfs -rm /user/p-pparente/example/1

# list again, and now everything is fine once more
hdfs.ls('/user/p-pparente/example')
hdfs.ls('/user/p-pparente/example')

['/user/p-pparente/example/1', '/user/p-pparente/example/2']