diff --git a/options/options_helper.cc b/options/options_helper.cc
index 94410e530..b54d589a3 100644
--- a/options/options_helper.cc
+++ b/options/options_helper.cc
@@ -454,6 +454,12 @@ bool ParseOptionHelper(char* opt_address, const OptionType& opt_type,
     case OptionType::kInt:
       *reinterpret_cast<int*>(opt_address) = ParseInt(value);
       break;
+    case OptionType::kInt32T:
+      *reinterpret_cast<int32_t*>(opt_address) = ParseInt32(value);
+      break;
+    case OptionType::kInt64T:
+      PutUnaligned(reinterpret_cast<int64_t*>(opt_address), ParseInt64(value));
+      break;
     case OptionType::kVectorInt:
       *reinterpret_cast<std::vector<int>*>(opt_address) = ParseVectorInt(value);
       break;
@@ -563,6 +569,16 @@ bool SerializeSingleOptionHelper(const char* opt_address,
     case OptionType::kInt:
       *value = ToString(*(reinterpret_cast<const int*>(opt_address)));
       break;
+    case OptionType::kInt32T:
+      *value = ToString(*(reinterpret_cast<const int32_t*>(opt_address)));
+      break;
+    case OptionType::kInt64T:
+      {
+        int64_t v;
+        GetUnaligned(reinterpret_cast<const int64_t*>(opt_address), &v);
+        *value = ToString(v);
+      }
+      break;
     case OptionType::kVectorInt:
       return SerializeIntVector(
           *reinterpret_cast<const std::vector<int>*>(opt_address), value);
diff --git a/options/options_helper.h b/options/options_helper.h
index 016a0a1af..1d3d880a6 100644
--- a/options/options_helper.h
+++ b/options/options_helper.h
@@ -47,6 +47,8 @@ Status GetTableFactoryFromMap(
 enum class OptionType {
   kBoolean,
   kInt,
+  kInt32T,
+  kInt64T,
   kVectorInt,
   kUInt,
   kUInt32T,
diff --git a/options/options_parser.cc b/options/options_parser.cc
index a6bb8db2d..2a85fa534 100644
--- a/options/options_parser.cc
+++ b/options/options_parser.cc
@@ -500,6 +500,16 @@ bool AreEqualOptions(
     case OptionType::kInt:
       return (*reinterpret_cast<const int*>(offset1) ==
               *reinterpret_cast<const int*>(offset2));
+    case OptionType::kInt32T:
+      return (*reinterpret_cast<const int32_t*>(offset1) ==
+              *reinterpret_cast<const int32_t*>(offset2));
+    case OptionType::kInt64T:
+      {
+        int64_t v1, v2;
+        GetUnaligned(reinterpret_cast<const int64_t*>(offset1), &v1);
+        GetUnaligned(reinterpret_cast<const int64_t*>(offset2), &v2);
+        return (v1 == v2);
+      }
     case OptionType::kVectorInt:
       return (*reinterpret_cast<const std::vector<int>*>(offset1) ==
               *reinterpret_cast<const std::vector<int>*>(offset2));
diff --git a/options/options_test.cc b/options/options_test.cc
index b7076c8bd..d6ccf531a 100644
--- a/options/options_test.cc
+++ b/options/options_test.cc
@@ -21,6 +21,7 @@
 #include "options/options_helper.h"
 #include "options/options_parser.h"
 #include "options/options_sanity_check.h"
+#include "port/port.h"
 #include "rocksdb/cache.h"
 #include "rocksdb/convenience.h"
 #include "rocksdb/memtablerep.h"
@@ -1813,6 +1814,18 @@ bool IsEscapedString(const std::string& str) {
 }
 }  // namespace
 
+TEST_F(OptionsParserTest, IntegerParsing) {
+  ASSERT_EQ(ParseUint64("18446744073709551615"), 18446744073709551615U);
+  ASSERT_EQ(ParseUint32("4294967295"), 4294967295U);
+  ASSERT_EQ(ParseSizeT("18446744073709551615"), 18446744073709551615U);
+  ASSERT_EQ(ParseInt64("9223372036854775807"), 9223372036854775807U);
+  ASSERT_EQ(ParseInt64("-9223372036854775808"), port::kMinInt64);
+  ASSERT_EQ(ParseInt32("2147483647"), 2147483647U);
+  ASSERT_EQ(ParseInt32("-2147483648"), port::kMinInt32);
+  ASSERT_EQ(ParseInt("-32767"), -32767);
+  ASSERT_EQ(ParseDouble("-1.234567"), -1.234567);
+}
+
 TEST_F(OptionsParserTest, EscapeOptionString) {
   ASSERT_EQ(UnescapeOptionString(
                 "This is a test string with \\# \\: and \\\\ escape chars."),
diff --git a/port/port_posix.h b/port/port_posix.h
index 2d2a7a79c..c53a640e9 100644
--- a/port/port_posix.h
+++ b/port/port_posix.h
@@ -87,8 +87,10 @@ namespace port {
 // For use at db/file_indexer.h kLevelMaxIndex
 const uint32_t kMaxUint32 = std::numeric_limits<uint32_t>::max();
 const int kMaxInt32 = std::numeric_limits<int32_t>::max();
+const int kMinInt32 = std::numeric_limits<int32_t>::min();
 const uint64_t kMaxUint64 = std::numeric_limits<uint64_t>::max();
 const int64_t kMaxInt64 = std::numeric_limits<int64_t>::max();
+const int64_t kMinInt64 = std::numeric_limits<int64_t>::min();
 const size_t kMaxSizet = std::numeric_limits<size_t>::max();
 
 static const bool kLittleEndian = PLATFORM_IS_LITTLE_ENDIAN;
diff --git a/port/win/port_win.h b/port/win/port_win.h
index 9b8ba9ff8..8f579c984 100644
--- a/port/win/port_win.h
+++ b/port/win/port_win.h
@@ -93,7 +93,9 @@ namespace port {
 // For use at db/file_indexer.h kLevelMaxIndex
 const uint32_t kMaxUint32 = UINT32_MAX;
 const int kMaxInt32 = INT32_MAX;
+const int kMinInt32 = INT32_MIN;
 const int64_t kMaxInt64 = INT64_MAX;
+const int64_t kMinInt64 = INT64_MIN;
 const uint64_t kMaxUint64 = UINT64_MAX;
 
 #ifdef _WIN64
@@ -109,8 +111,10 @@ const size_t kMaxSizet = UINT_MAX;
 // For use at db/file_indexer.h kLevelMaxIndex
 const uint32_t kMaxUint32 = std::numeric_limits<uint32_t>::max();
 const int kMaxInt32 = std::numeric_limits<int>::max();
+const int kMinInt32 = std::numeric_limits<int>::min();
 const uint64_t kMaxUint64 = std::numeric_limits<uint64_t>::max();
 const int64_t kMaxInt64 = std::numeric_limits<int64_t>::max();
+const int64_t kMinInt64 = std::numeric_limits<int64_t>::min();
 
 const size_t kMaxSizet = std::numeric_limits<size_t>::max();
 
diff --git a/util/string_util.cc b/util/string_util.cc
index f3581105e..26e6759ac 100644
--- a/util/string_util.cc
+++ b/util/string_util.cc
@@ -21,6 +21,7 @@
 #include <utility>
 #include <vector>
 #include "rocksdb/env.h"
+#include "port/port.h"
 #include "rocksdb/slice.h"
 
 namespace rocksdb {
@@ -276,6 +277,15 @@ uint32_t ParseUint32(const std::string& value) {
   }
 }
 
+int32_t ParseInt32(const std::string& value) {
+  int64_t num = ParseInt64(value);
+  if (num <= port::kMaxInt32 && num >= port::kMinInt32) {
+    return static_cast<int32_t>(num);
+  } else {
+    throw std::out_of_range(value);
+  }
+}
+
 #endif
 
 uint64_t ParseUint64(const std::string& value) {
@@ -303,6 +313,31 @@ uint64_t ParseUint64(const std::string& value) {
   return num;
 }
 
+int64_t ParseInt64(const std::string& value) {
+  size_t endchar;
+#ifndef CYGWIN
+  int64_t num = std::stoll(value.c_str(), &endchar);
+#else
+  char* endptr;
+  int64_t num = std::strtoll(value.c_str(), &endptr, 0);
+  endchar = endptr - value.c_str();
+#endif
+
+  if (endchar < value.length()) {
+    char c = value[endchar];
+    if (c == 'k' || c == 'K')
+      num <<= 10LL;
+    else if (c == 'm' || c == 'M')
+      num <<= 20LL;
+    else if (c == 'g' || c == 'G')
+      num <<= 30LL;
+    else if (c == 't' || c == 'T')
+      num <<= 40LL;
+  }
+
+  return num;
+}
+
 int ParseInt(const std::string& value) {
   size_t endchar;
 #ifndef CYGWIN
diff --git a/util/string_util.h b/util/string_util.h
index b2bca40ac..6e125ddfa 100644
--- a/util/string_util.h
+++ b/util/string_util.h
@@ -109,12 +109,17 @@ std::string trim(const std::string& str);
 bool ParseBoolean(const std::string& type, const std::string& value);
 
 uint32_t ParseUint32(const std::string& value);
+
+int32_t ParseInt32(const std::string& value);
 #endif
 
 uint64_t ParseUint64(const std::string& value);
 
 int ParseInt(const std::string& value);
 
+
+int64_t ParseInt64(const std::string& value);
+
 double ParseDouble(const std::string& value);
 
 size_t ParseSizeT(const std::string& value);