• 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 234 files with 21,020 lines of code.
• 1 very long files (1,294 lines of code)
• 1 long files (514 lines of code)
• 21 medium size files (6,267 lines of codeclsfd_ftr_w_mp_ins)
• 50 small files (7,565 lines of code)
• 161 very small files (5,380 lines of code)

There are 61 files with lines longer than 120 characters. In total, there are 307 long lines.

File	# lines	# units	# long lines
mock_getty_session.go in pkg/remoting/mock	342	72	27
config.go in pkg/rm	41	2	22
mock_driver.go in pkg/datasource/sql/mock	361	62	16
mock_datasource_manager.go in pkg/datasource/sql/mock	179	31	15
multi_update_excutor.go in pkg/datasource/sql/exec/at	280	10	11
tcc_fence_wrapper_handler.go in pkg/rm/tcc/fence/handler	223	13	11
config.go in pkg/tm	23	1	10
insert_on_update_executor.go in pkg/datasource/sql/exec/at	361	13	10
client_on_response_processor.go in pkg/remoting/processor/client	53	2	9
config.go in pkg/remoting/config	62	5	8
mock_etcd_client.go in pkg/discovery/mock	142	20	8
undo.go in pkg/datasource/sql/undo/base	430	28	8
mysql_insertonduplicate_update_undo_log_builder.go in pkg/datasource/sql/undo/builder	258	10	8
tcc_fence_db.go in pkg/rm/tcc/fence/store/db/dao	188	10	8
mysql_insert_undo_log_builder.go in pkg/datasource/sql/undo/builder	461	17	7
xa_resource_manager.go in pkg/datasource/sql	174	18	7
mysql_multi_update_undo_log_builder.go in pkg/datasource/sql/undo/builder	179	8	6
insert_executor.go in pkg/datasource/sql/exec/at	514	18	6
trigger.go in pkg/datasource/sql/datasource/mysql	174	5	6
tcc_fence_store_sql.go in pkg/rm/tcc/fence/store/db/sql	42	7	6
select_for_update_executor.go in pkg/datasource/sql/exec/at	258	6	5
tcc_resource.go in pkg/rm/tcc	144	16	5
config.go in pkg/client	195	10	4
rm_branch_rollback_processor.go in pkg/remoting/processor/client	65	2	4
branch_undo_log.pb.go in pkg/datasource/sql/undo/parser	1294	99	4
mysql_delete_undo_log_builder.go in pkg/datasource/sql/undo/builder	83	5	4
mysql_update_undo_log_builder.go in pkg/datasource/sql/undo/builder	190	6	4
config.go in pkg/datasource/sql/undo	34	3	4
executor.go in pkg/datasource/sql/exec	76	5	4
multi_delete_executor.go in pkg/datasource/sql/exec/at	156	6	4
rm_branch_commit_processor.go in pkg/remoting/processor/client	64	2	3
mysql_multi_undo_log_builder.go in pkg/datasource/sql/undo/builder	86	4	3
mysql_multi_delete_undo_log_builder.go in pkg/datasource/sql/undo/builder	142	5	3
multi_executor.go in pkg/datasource/sql/exec/at	124	5	3
update_executor.go in pkg/datasource/sql/exec/at	223	7	3
transaction_executor.go in pkg/tm	130	6	2
getty_remoting.go in pkg/remoting/getty	102	9	2
getty_client.go in pkg/remoting/getty	94	11	2
session_config.go in pkg/remoting/config	33	1	2
conn_xa.go in pkg/datasource/sql	317	23	2
basic_undo_log_builder.go in pkg/datasource/sql/undo/builder	254	8	2
executor.go in pkg/datasource/sql/undo/executor	141	5	2
utils.go in pkg/datasource/sql/undo/executor	124	5	2
async_worker.go in pkg/datasource/sql	162	6	2
at_resource_manager.go in pkg/datasource/sql	84	11	2
select_for_update_executor.go in pkg/datasource/sql/exec	271	5	2
at_executor.go in pkg/datasource/sql/exec/at	53	4	2
ctxutil.go in pkg/datasource/sql/util	91	6	2
meta_cache.go in pkg/datasource/sql/datasource/base	135	6	2
dubbo_transaction_filter.go in pkg/integration/dubbo	66	7	2