On a cluster running CDH 5.0 or above, you use the hadoop fs –put command to write a
300MB file into a previously empty directory using an HDFS block size of 64 MB. Just after
this command has finished writing 200 MB of this file, what would another use see when
they look in directory?

A.
The directory will appear to be empty until the entire file write is completed on the cluster

B.
They will see the file with a ._COPYING_ extension on its name. If they view the file, they
will see contents of the file up to the last completed block (as each 64MB block is written,
that block becomes available)

C.
They will see the file with a ._COPYING_ extension on its name. If they attempt to view
the file, they will get a ConcurrentFileAccessException until the entire file write is completed
on the cluster

D.
They will see the file with its original name. If they attempt to view the file, they will get a
ConcurrentFileAccessException until the entire file write is completed on the cluster