Add new value value type for wide-column entities (#10211)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/10211

Test Plan: `make check`

Reviewed By: riversand963

Differential Revision: D37294067

Pulled By: ltamasi

fbshipit-source-id: 3b26f1964746ba4e3654579cb07cd975a29c7319

db/dbformat.cc

@@ -26,7 +26,7 @@ namespace ROCKSDB_NAMESPACE {
 // and the value type is embedded as the low 8 bits in the sequence
 // number in internal keys, we need to use the highest-numbered
 // ValueType, not the lowest).
-const ValueType kValueTypeForSeek = kTypeDeletionWithTimestamp;
+const ValueType kValueTypeForSeek = kTypeWideColumnEntity;
 const ValueType kValueTypeForSeekForPrev = kTypeDeletion;
 const std::string kDisableUserTimestamp("");
 
@@ -46,6 +46,8 @@ EntryType GetEntryType(ValueType value_type) {
       return kEntryRangeDeletion;
     case kTypeBlobIndex:
       return kEntryBlobIndex;
+    case kTypeWideColumnEntity:
+      return kEntryWideColumnEntity;
     default:
       return kEntryOther;
   }

db/dbformat.h

@@ -66,7 +66,9 @@ enum ValueType : unsigned char {
   kTypeBeginUnprepareXID = 0x13,  // WAL only.
   kTypeDeletionWithTimestamp = 0x14,
   kTypeCommitXIDAndTimestamp = 0x15,  // WAL only
-  kMaxValue = 0x7F                    // Not used for storing records.
+  kTypeWideColumnEntity = 0x16,
+  kTypeColumnFamilyWideColumnEntity = 0x17,  // WAL only
+  kMaxValue = 0x7F                           // Not used for storing records.
 };
 
 // Defined in dbformat.cc
@@ -76,8 +78,8 @@ extern const ValueType kValueTypeForSeekForPrev;
 // Checks whether a type is an inline value type
 // (i.e. a type used in memtable skiplist and sst file datablock).
 inline bool IsValueType(ValueType t) {
-  return t <= kTypeMerge || t == kTypeSingleDeletion || t == kTypeBlobIndex ||
-         kTypeDeletionWithTimestamp == t;
+  return t <= kTypeMerge || kTypeSingleDeletion == t || kTypeBlobIndex == t ||
+         kTypeDeletionWithTimestamp == t || kTypeWideColumnEntity == t;
 }
 
 // Checks whether a type is from user operation

include/rocksdb/types.h

@@ -58,6 +58,7 @@ enum EntryType {
   kEntryRangeDeletion,
   kEntryBlobIndex,
   kEntryDeleteWithTimestamp,
+  kEntryWideColumnEntity,
   kEntryOther,
 };