• There are 374 files with units, with 36,352 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 3 complex files (McCabe index sum 126-250; 2,100 lines of code)
• 30 medium complex files (McCabe index sum 51-125; 11,282 lines of code)
• 46 slightly complex files (McCabe index sum 26-50; 8,073 lines of code)
• 295 simple files (McCabe index sum 1-25; 14,897 lines of code)
• 144 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
CqlColumnFamilyDefinitionImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/schema	688	94	151	22	10
AbstractComposite.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/model	585	61	133	23	11
ShardedDistributedMessageQueue.java in astyanax-queue/src/main/java/com/netflix/astyanax/recipes/queue	827	59	132	16	13
ThriftKeyspaceImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	828	50	111	13	8
CFMutationQueryGen.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/writes	497	36	97	20	11
ConnectionPoolConfigurationImpl.java in astyanax-core/src/main/java/com/netflix/astyanax/connectionpool/impl	452	82	91	20	5
ThriftColumnFamilyDefinitionImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift/ddl	383	71	91	24	5
CompositeEntityManager.java in astyanax-entity-mapper/src/main/java/com/netflix/astyanax/entitystore	460	34	90	20	7
AbstractColumnListMutation.java in astyanax-cassandra/src/main/java/com/netflix/astyanax	341	59	88	26	3
JsonRowsWriter.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/util	434	24	87	20	21
AbstractColumnListMutationImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/writes	350	58	87	25	3
MessageConsumerImpl.java in astyanax-queue/src/main/java/com/netflix/astyanax/recipes/queue	399	13	80	20	32
DefaultEntityManager.java in astyanax-entity-mapper/src/main/java/com/netflix/astyanax/entitystore	381	34	77	20	5
AllRowsReader.java in astyanax-recipes/src/main/java/com/netflix/astyanax/recipes/reader	434	27	76	18	23
CqlKeyspaceImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql	402	51	73	18	8
ThriftUtils.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	255	10	71	28	25
SimpleHostConnectionPool.java in astyanax-core/src/main/java/com/netflix/astyanax/connectionpool/impl	430	30	70	16	10
ColumnPrefixDistributedRowLock.java in astyanax-recipes/src/main/java/com/netflix/astyanax/recipes/locks	281	34	67	24	7
ThriftColumnFamilyQueryImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	622	18	65	10	26
OneStepDistributedRowLock.java in astyanax-recipes/src/main/java/com/netflix/astyanax/recipes/locks	266	31	64	24	7
DualWritesKeyspace.java in astyanax-contrib/src/main/java/com/netflix/astyanax/contrib/dualwrites	422	51	63	15	7
DualWritesColumnListMutation.java in astyanax-contrib/src/main/java/com/netflix/astyanax/contrib/dualwrites	386	63	63	16	1
ThriftAllRowsQueryImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	375	28	63	17	25
CqlAllRowsQueryImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/reads	363	25	63	17	16
AbstractThriftMutationBatchImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	292	30	61	21	10
FlatTableRowSliceQueryGen.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/reads	240	15	61	25	18
SerializerPackageImpl.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/serializers	269	30	60	22	11
ThriftClusterImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	397	35	60	15	5
CqlKeyspaceDefinitionImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/schema	285	33	59	21	5
ReverseIndexQuery.java in astyanax-recipes/src/main/java/com/netflix/astyanax/recipes	285	22	55	19	13
AbstractMutationBatchImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/writes	252	30	55	22	10
CFRowRangeQueryGen.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/reads	211	12	55	26	18
CFRowQueryGen.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/reads	290	12	54	19	10
CountingConnectionPoolMonitor.java in astyanax-core/src/main/java/com/netflix/astyanax/connectionpool/impl	253	41	50	20	9
AnnotatedCompositeSerializer.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/serializers	256	26	50	20	6
JavaDriverConnectionPoolMonitorImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql	194	50	50	26	1
CqlTypeMapping.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/util	165	7	49	30	19
CqlRowQueryImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql/reads	247	29	49	20	8
CompositeEntityMapper.java in astyanax-entity-mapper/src/main/java/com/netflix/astyanax/entitystore	278	20	49	18	9
CqlClusterImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql	255	31	48	19	5
Coercions.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/mapping	101	3	45	45	22
JavaDriverConnectionPoolConfigurationImpl.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql	196	45	45	23	1
CqlRingDescriber.java in astyanax-cql/src/main/java/com/netflix/astyanax/cql	160	12	44	28	9
AbstractHostPartitionConnectionPool.java in astyanax-core/src/main/java/com/netflix/astyanax/connectionpool/impl	240	17	43	18	10
ShadedTypeParser.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/shaded/org/apache/cassandra/db/marshal	204	20	43	21	9
Message.java in astyanax-queue/src/main/java/com/netflix/astyanax/recipes/queue	170	33	43	25	9
ThriftSyncConnectionFactoryImpl.java in astyanax-thrift/src/main/java/com/netflix/astyanax/thrift	288	18	42	15	9
CompositeColumnEntityMapper.java in astyanax-entity-mapper/src/main/java/com/netflix/astyanax/entitystore	215	17	42	20	8
Mapping.java in astyanax-cassandra/src/main/java/com/netflix/astyanax/mapping	172	20	41	24	6
AstyanaxContext.java in astyanax-cassandra/src/main/java/com/netflix/astyanax	201	23	40	20	7

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.