SegName
SegID
SegCodec
DelGen
DeletionCount
FieldInfosGen
DocValuesGen
SoftDelCount
FieldInfosFiles
UpdatesFiles
Header
LuceneVersion
IndexCreatedVersionMajor
Version
NameCounter
SegCount
MinSegmentLuceneVersion
SegmentCommitInfo
SegmentCommitInfo
CommitUserData
Footer
... ...
索引文件之Segment_N(Lucene 7.5.0)