CLI is using a blocksize that is different than upload. Changing to m…

…atch.

hca/upload/lib/client_side_checksum_handler.py

@@ -36,8 +36,6 @@ class ChecksumCalculator:
         """ The ChecksumCalculator encapsulates calling various library functions based on the required checksum to
         be calculated on a file."""
 
-        READ_BLOCKSIZE = 10 * 1024 * 1024  # Do I/O in 10MiB chunks.
-
         def __init__(self, filename, checksums=CHECKSUM_NAMES):
             self._filename = filename
             self._checksums = checksums
@@ -49,7 +47,7 @@ def compute(self):
             _multipart_chunksize = get_s3_multipart_chunk_size(_file_size)
             with ChecksummingSink(_multipart_chunksize, hash_functions=self._checksums) as sink:
                 with open(self._filename, 'rb') as _file_object:
-                    sink.write(_file_object.read(self.READ_BLOCKSIZE))
+                    sink.write(_file_object.read(_multipart_chunksize))
                 checksums = sink.get_checksums()
                 print("Checksumming took %.2f milliseconds to compute" % ((time.time() - start_time) * 1000))
             return checksums