• There are 821 files with units, with 81,862 lines of code.
• 3 very complex files (McCabe index sum 251+; 6,742 lines of code)
• 3 complex files (McCabe index sum 126-250; 2,968 lines of code)
• 30 medium complex files (McCabe index sum 51-125; 13,154 lines of code)
• 68 slightly complex files (McCabe index sum 26-50; 15,082 lines of code)
• 717 simple files (McCabe index sum 1-25; 43,916 lines of code)
• 195 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
JobClusterActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster	2641	134	476	18	21
JobClusterManagerProto.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/proto	1888	231	297	16	13
JobActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job	2213	99	284	13	21
ExecutorStateManagerActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	1143	56	163	14	14
KeyValueBasedPersistenceProvider.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/persistence	863	70	134	16	10
JobClustersManagerActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master	962	67	128	13	11
DataFormatAdapter.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/domain	681	51	113	17	9
MantisStageMetadataImpl.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job	466	44	99	21	12
MantisJobMetadataImpl.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job	409	55	88	22	11
StorageUnit.java in mantis-common/src/main/java/io/mantisrx/common/storage	390	87	87	22	1
ReservationRegistryActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	604	37	85	14	6
MantisWorkerMetadataImpl.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job/worker	315	45	81	26	23
ExecutorStateManagerImpl.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	664	25	81	12	15
JobDefinition.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/domain	341	39	77	23	13
ResourceClusterActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	895	40	75	8	8
JobWorker.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job/worker	509	25	74	15	12
JobClusterDefinitionImpl.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/domain	384	45	73	19	13
JobAutoScaler.java in mantis-runtime-autoscaler-api/src/main/java/io/mantisrx/server/worker/jobmaster	545	20	71	13	21
NamedJob.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/store	355	52	70	20	5
MantisMasterClientApi.java in mantis-control-plane/mantis-control-plane-client/src/main/java/io/mantisrx/server/master/client	666	32	70	11	9
RemoteObservable.java in mantis-remote-observable/src/main/java/io/reactivex/mantis/remote/observable	577	33	70	12	9
MantisWorkerMetadataWritable.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/store	283	47	68	24	9
WorkerExecutionOperationsNetworkStage.java in mantis-runtime-executor/src/main/java/io/mantisrx/server/worker	567	18	66	12	15
TaskExecutor.java in mantis-server/mantis-server-agent/src/main/java/io/mantisrx/server/agent	565	40	65	12	5
CompressionUtils.java in mantis-common/src/main/java/io/mantisrx/common/compression	329	15	63	19	14
SseWorkerConnection.java in mantis-server/mantis-server-worker-client/src/main/java/io/mantisrx/server/worker/client	341	16	62	18	16
TaskExecutorState.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	269	32	61	23	8
MantisJobDefinition.java in mantis-common/src/main/java/io/mantisrx/runtime	289	38	60	21	14
MantisJobStore.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/persistence	279	43	58	21	6
JobDefinitionResolver.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster	152	5	58	38	45
WorkerMetricHandler.java in mantis-runtime-autoscaler-api/src/main/java/io/mantisrx/server/worker/jobmaster	444	13	55	12	15
PushServer.java in mantis-network/src/main/java/io/reactivex/mantis/network/push	396	11	54	14	34
OperatorGroupBy.java in mantis-common/src/main/java/io/reactivx/mantis/operators	252	19	52	21	6
HttpSourceImpl.java in mantis-runtime/src/main/java/io/mantisrx/runtime/source/http/impl	550	39	52	9	7
ClutchConfiguration.java in mantis-runtime-autoscaler-api/src/main/java/io/mantisrx/server/worker/jobmaster/clutch	157	17	52	33	26
ResourceClusterAwareSchedulerActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/server/master/scheduler	480	37	51	11	5
RunningWorker.java in mantis-runtime-executor/src/main/java/io/mantisrx/server/worker	314	46	50	16	3
Metrics.java in mantis-common/src/main/java/io/mantisrx/common/metrics	205	28	49	24	13
MantisJobClusterMetadataView.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster	230	32	47	20	16
ResourceClusterScalerActor.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/resourcecluster	466	21	46	10	10
MantisKafkaConsumer.java in mantis-connectors/mantis-connector-kafka/src/main/java/io/mantisrx/connector/kafka/source	250	27	46	18	9
PushServerSse.java in mantis-network/src/main/java/io/reactivex/mantis/network/push	262	3	46	18	43
RemoteObservableConnectionHandler.java in mantis-remote-observable/src/main/java/io/reactivex/mantis/remote/observable	384	8	45	12	10
BaseRoute.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/api/akka/route/v1	366	14	44	12	8
MantisJobMetadataView.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/jobcluster/job	152	12	43	28	19
ServerSentEventRequestHandler.java in mantis-runtime/src/main/java/io/mantisrx/runtime/sink	283	2	43	15	42
OnSubscribeRedo.java in mantis-common/src/main/java/io/reactivx/mantis/operators	246	18	42	17	12
ServerSlotManager.java in mantis-common/src/main/java/io/mantisrx/common/network	173	13	41	24	13
JobClusterProtoAdapter.java in mantis-control-plane/mantis-control-plane-server/src/main/java/io/mantisrx/master/api/akka/route/proto	285	24	41	14	8
WorkerConfigurationWritable.java in mantis-runtime-loader/src/main/java/io/mantisrx/runtime/loader/config	225	41	41	18	1

• 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.