Add comment about ValueType

15c39919 · Igor Canadi · 9e7d00d9 · 15c39919
隐藏空白更改
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db/dbformat.h db/dbformat.h +2 -0

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--- a/db/dbformat.h
+++ b/db/dbformat.h
@@ -32,6 +32,8 @@ enum ValueType : unsigned char {
  kTypeDeletion = 0x0,
  kTypeValue = 0x1,
  kTypeMerge = 0x2,
+  // Following types are used only in write ahead logs. They are not used in
+  // memtables or sst files:
  kTypeLogData = 0x3,
  kTypeColumnFamilyDeletion = 0x4,
  kTypeColumnFamilyValue = 0x5,