Add comment about ValueType

2014-05-05 12:57:47 -07:00 · 2014-05-05 12:57:47 -07:00 · 15c3991933
commit 15c3991933
parent 9e7d00d9e7
1 changed files with 2 additions and 0 deletions
--- 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,