• File size measurements show the distribution of size of files.
• Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
• It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.

• There are 352 files with 43,481 lines of code.
• 4 very long files (5,603 lines of code)
• 8 long files (5,470 lines of code)
• 44 medium size files (13,622 lines of codeclsfd_ftr_w_mp_ins)
• 72 small files (10,068 lines of code)
• 224 very small files (8,718 lines of code)

There are 52 files with lines longer than 120 characters. In total, there are 170 long lines.

File	# lines	# units	# long lines
Flight_grpc.pb.go in arrow/flight	607	41	17
server_auth.go in arrow/flight	175	11	10
cdata.go in arrow/cdata	437	22	8
scalar.go in arrow/scalar	667	45	8
table_schema.go in odps/tableschema	600	31	8
scenario.go in arrow/internal/flight_integration	409	19	7
Flight.pb.go in arrow/flight	1186	119	6
client.go in arrow/flight	234	10	6
temporal.go in arrow/scalar	432	78	6
stream_upload_session.go in odps/tunnel	304	12	6
metadata.go in arrow/ipc	926	40	5
rest_client.go in odps/restclient	254	21	5
cdata_test_framework.go in arrow/cdata	172	18	4
client_auth.go in arrow/flight	57	4	4
arrdata.go in arrow/internal/arrdata	1238	21	4
resources.go in odps	306	9	4
nested.go in arrow/scalar	246	25	3
ioutil.go in arrow/internal/arrdata	202	7	3
arrjson.go in arrow/internal/arrjson	1549	67	3
interval.go in arrow/array	483	58	3
resource.go in odps	228	22	3
upload_session.go in odps/tunnel	351	20	3
manager.go in odps/security	306	23	3
type_string.go in arrow	52	2	2
server.go in arrow/flight	119	9	2
extension_types.go in arrow/internal/testing/types	147	27	2
compare.go in arrow/array	534	26	2
extension.go in arrow/array	97	14	2
tunnel.go in odps/tunnel	221	19	2
record_pack_stream_writer.go in odps/tunnel	89	7	2
record_protoc_writer.go in odps/tunnel	355	14	2
functions.go in odps	127	7	2
schema.go in odps	119	18	2
instances.go in odps	297	7	2
utils.go in tea/utils	130	5	2
file_reader.go in arrow/ipc	476	32	1
writer.go in arrow/ipc	488	18	1
main.go in arrow/ipc/cmd/arrow-json-integration-test	175	5	1
datatype_nested.go in arrow	275	46	1
bitmaps.go in arrow/bitutil	288	23	1
cdata_exports.go in arrow/cdata	325	13	1
parse.go in arrow/scalar	296	5	1
Block.go in arrow/internal/flatbuf	40	9	1
boolean.go in arrow/array	65	6	1
table.go in arrow/array	312	35	1
concat.go in arrow/array	260	13	1
download_session.go in odps/tunnel	314	18	1
record_protoc_reader.go in odps/tunnel	357	9	1
arrow_util.go in odps/tableschema	327	7	1
resource_builder.go in odps/common	120	28	1