From db67c6a51ce6967068c9d67ba1b7512e3dd95b9f Mon Sep 17 00:00:00 2001
From: Yang Zhang <yang.zhang@pingcap.com>
Date: Mon, 30 Sep 2024 01:51:20 -0700
Subject: [PATCH] Prevent Titan panicing

Signed-off-by: Yang Zhang <yang.zhang@pingcap.com>
---
 db/dbformat.cc | 4 +++-
 db/dbformat.h  | 3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/db/dbformat.cc b/db/dbformat.cc
index 63bb354de87a..eaf7f9a32163 100644
--- a/db/dbformat.cc
+++ b/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 = kTypeWideColumnEntity;
+const ValueType kValueTypeForSeek = kTypeBlobIndex;
 const ValueType kValueTypeForSeekForPrev = kTypeDeletion;
 const std::string kDisableUserTimestamp("");
 
@@ -48,6 +48,8 @@ EntryType GetEntryType(ValueType value_type) {
       return kEntryBlobIndex;
     case kTypeWideColumnEntity:
       return kEntryWideColumnEntity;
+    case kTypeTitanBlobIndex:
+      return kEntryBlobIndex;
     default:
       return kEntryOther;
   }
diff --git a/db/dbformat.h b/db/dbformat.h
index 981866c09dc5..ab632a229e37 100644
--- a/db/dbformat.h
+++ b/db/dbformat.h
@@ -54,7 +54,7 @@ enum ValueType : unsigned char {
   kTypeColumnFamilyRangeDeletion = 0xE,   // WAL only.
   kTypeRangeDeletion = 0xF,               // meta block
   kTypeColumnFamilyBlobIndex = 0x10,      // Blob DB only
-  kTypeBlobIndex = 0x11,                  // Blob DB only
+  kTypeTitanBlobIndex = 0x11,             // Titan Blob DB only
   // When the prepared record is also persisted in db, we use a different
   // record. This is to ensure that the WAL that is generated by a WritePolicy
   // is not mistakenly read by another, which would result into data
@@ -68,6 +68,7 @@ enum ValueType : unsigned char {
   kTypeCommitXIDAndTimestamp = 0x15,  // WAL only
   kTypeWideColumnEntity = 0x16,
   kTypeColumnFamilyWideColumnEntity = 0x17,  // WAL only
+  kTypeBlobIndex = 0x18,                     // RocksDB native Blob DB only
   kTypeMaxValid,    // Should be after the last valid type, only used for
                     // validation
   kMaxValue = 0x7F  // Not used for storing records.