• 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 690 files with 65,366 lines of code.
• 6 very long files (8,651 lines of code)
• 6 long files (4,398 lines of code)
• 61 medium size files (17,485 lines of codeclsfd_ftr_w_mp_ins)
• 111 small files (15,922 lines of code)
• 506 very small files (18,910 lines of code)

There are 194 files with lines longer than 120 characters. In total, there are 534 long lines.

File	# lines	# units	# long lines
PersistentEntityStoreImpl.java in entity-store/src/main/java/jetbrains/exodus/entitystore	2226	165	61
AbstractPersistent23Tree.java in utils/src/main/java/jetbrains/exodus/core/dataStructures/persistent	1186	96	33
PersistentEntityStoreConfig.java in openAPI/src/main/java/jetbrains/exodus/entitystore	468	105	26
SortEngine.kt in query/src/main/kotlin/jetbrains/exodus/query	325	18	14
PersistentStoreTransaction.java in entity-store/src/main/java/jetbrains/exodus/entitystore	1328	136	12
UpdatablePropertiesCachedInstanceIterable.kt in entity-store/src/main/kotlin/jetbrains/exodus/entitystore/iterate	323	17	11
UniqueKeyIndicesEngine.java in query/src/main/java/jetbrains/exodus/query	196	11	10
Log.kt in environment/src/main/kotlin/jetbrains/exodus/log	1613	50	9
EnvironmentImpl.java in environment/src/main/java/jetbrains/exodus/env	1247	107	9
PersistentEx.kt in utils/src/main/kotlin/jetbrains/exodus/core/dataStructures/persistent	73	-	9
CompressBackupUtil.java in compress/src/main/java/jetbrains/exodus/util	670	29	8
StoreImpl.java in environment/src/main/java/jetbrains/exodus/env	190	19	7
EntityIterableBase.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate	657	65	7
Concat.java in query/src/main/java/jetbrains/exodus/query	85	8	6
SingleTypeUnsortedEntityIdArrayCachedInstanceIterable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate/cached	138	12	6
BackupUtil.java in entity-store/src/main/java/jetbrains/exodus/entitystore/util	482	19	6
ConcurrentStablePriorityQueue.java in utils/src/main/java/jetbrains/exodus/core/dataStructures	194	19	6
Persistent23Tree.java in utils/src/main/java/jetbrains/exodus/core/dataStructures/persistent	194	17	6
ModelMetaDataImpl.java in query/src/main/java/jetbrains/exodus/query/metadata	224	15	5
TreeKeepingEntityIterable.java in query/src/main/java/jetbrains/exodus/query	206	11	5
SortIndirectIterable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate	264	16	5
XodusDirectory.java in lucene-directory-v2/src/main/java/jetbrains/exodus/lucene2	957	50	5
SortByLinkProperty.java in query/src/main/java/jetbrains/exodus/query	41	6	4
And.java in query/src/main/java/jetbrains/exodus/query	96	7	4
ContextualEnvironmentImpl.java in environment/src/main/java/jetbrains/exodus/env	163	19	4
BottomPage.java in environment/src/main/java/jetbrains/exodus/tree/btree	176	20	4
BTreeDupMutable.java in environment/src/main/java/jetbrains/exodus/tree/btree	173	17	4
PersistentEntityStoreRefactorings.kt in entity-store/src/main/kotlin/jetbrains/exodus/entitystore	1051	22	4
BinaryOperatorEntityIterable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate/binop	215	12	4
PropertiesIterable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate	221	25	4
Settings.java in entity-store/src/main/java/jetbrains/exodus/entitystore	36	6	4
PersistentLong23TreeMap.java in utils/src/main/java/jetbrains/exodus/core/dataStructures/persistent	109	11	4
EntityMetaDataImpl.java in query/src/main/java/jetbrains/exodus/query/metadata	411	57	3
AddNullStaticTypedEntityIterable.java in query/src/main/java/jetbrains/exodus/query	71	2	3
BackgroundCleaningJob.kt in environment/src/main/kotlin/jetbrains/exodus/gc	99	2	3
InternalPage.java in environment/src/main/java/jetbrains/exodus/tree/btree	172	23	3
PatriciaCursorDecorator.java in environment/src/main/java/jetbrains/exodus/tree/patricia	351	23	3
Reflect.kt in tools/src/main/kotlin/jetbrains/exodus/env	382	3	3
SelectDistinctIterable.kt in entity-store/src/main/kotlin/jetbrains/exodus/entitystore/iterate	107	8	3
EntityIterableCache.kt in entity-store/src/main/kotlin/jetbrains/exodus/entitystore	281	14	3
SortIterable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate	457	30	3
PropertiesTable.java in entity-store/src/main/java/jetbrains/exodus/entitystore/tables	164	11	3
FileSystemBlobVaultOld.java in entity-store/src/main/java/jetbrains/exodus/entitystore	499	29	3
NonAdjustableCaches.kt in utils/src/main/kotlin/jetbrains/exodus/core/dataStructures	17	-	3
InMemoryMergeSortIterableWithValueGetter.kt in query/src/main/kotlin/jetbrains/exodus/query	85	4	2
InMemoryMergeSortIterable.kt in query/src/main/kotlin/jetbrains/exodus/query	78	4	2
Sort.java in query/src/main/java/jetbrains/exodus/query	39	5	2
InMemoryMergeSortOnInitIterable.java in query/src/main/java/jetbrains/exodus/query	66	6	2
GetLinks.java in query/src/main/java/jetbrains/exodus/query	63	8	2
ModelMetaData.java in query/src/main/java/jetbrains/exodus/query/metadata	16	-	2