diff --git a/velox/common/memory/CMakeLists.txt b/velox/common/memory/CMakeLists.txt
index a4ea2a847f2c..2bb6e2d2d154 100644
--- a/velox/common/memory/CMakeLists.txt
+++ b/velox/common/memory/CMakeLists.txt
@@ -34,6 +34,7 @@ velox_add_library(
 velox_link_libraries(
   velox_memory
   PUBLIC velox_common_base
+         velox_common_config
          velox_exception
          velox_flag_definitions
          velox_time
diff --git a/velox/common/memory/Memory.cpp b/velox/common/memory/Memory.cpp
index 7c7ffd42574f..5b4e0eb42fe5 100644
--- a/velox/common/memory/Memory.cpp
+++ b/velox/common/memory/Memory.cpp
@@ -75,15 +75,15 @@ std::unique_ptr<MemoryArbitrator> createArbitrator(
       // SharedArbitrator class. After Prestissimo switches, this part of the
       // code will be removed.
       extraArbitratorConfigs["reserved-capacity"] =
-          folly::to<std::string>(options.arbitratorReservedCapacity);
+          folly::to<std::string>(options.arbitratorReservedCapacity) + "B";
       extraArbitratorConfigs["memory-pool-initial-capacity"] =
-          folly::to<std::string>(options.memoryPoolInitCapacity);
+          folly::to<std::string>(options.memoryPoolInitCapacity) + "B";
       extraArbitratorConfigs["memory-pool-reserved-capacity"] =
-          folly::to<std::string>(options.memoryPoolReservedCapacity);
+          folly::to<std::string>(options.memoryPoolReservedCapacity) + "B";
       extraArbitratorConfigs["memory-pool-transfer-capacity"] =
-          folly::to<std::string>(options.memoryPoolTransferCapacity);
+          folly::to<std::string>(options.memoryPoolTransferCapacity) + "B";
       extraArbitratorConfigs["memory-reclaim-wait-ms"] =
-          folly::to<std::string>(options.memoryReclaimWaitMs);
+          folly::to<std::string>(options.memoryReclaimWaitMs) + "ms";
       extraArbitratorConfigs["global-arbitration-enabled"] =
           folly::to<std::string>(options.globalArbitrationEnabled);
       extraArbitratorConfigs["check-usage-leak"] =
diff --git a/velox/common/memory/SharedArbitrator.cpp b/velox/common/memory/SharedArbitrator.cpp
index 8a71f2763ec9..37da20aa799f 100644
--- a/velox/common/memory/SharedArbitrator.cpp
+++ b/velox/common/memory/SharedArbitrator.cpp
@@ -19,6 +19,7 @@
 
 #include "velox/common/base/Exceptions.h"
 #include "velox/common/base/RuntimeMetrics.h"
+#include "velox/common/config/Config.h"
 #include "velox/common/memory/Memory.h"
 #include "velox/common/testutil/TestValue.h"
 #include "velox/common/time/Timer.h"
@@ -82,32 +83,50 @@ T getConfig(
 
 int64_t SharedArbitrator::ExtraConfig::getReservedCapacity(
     const std::unordered_map<std::string, std::string>& configs) {
-  return getConfig<int64_t>(
-      configs, kReservedCapacity, kDefaultReservedCapacity);
+  return config::toCapacity(
+      getConfig<std::string>(
+          configs, kReservedCapacity, std::string(kDefaultReservedCapacity)),
+      config::CapacityUnit::BYTE);
 }
 
 uint64_t SharedArbitrator::ExtraConfig::getMemoryPoolInitialCapacity(
     const std::unordered_map<std::string, std::string>& configs) {
-  return getConfig<uint64_t>(
-      configs, kMemoryPoolInitialCapacity, kDefaultMemoryPoolInitialCapacity);
+  return config::toCapacity(
+      getConfig<std::string>(
+          configs,
+          kMemoryPoolInitialCapacity,
+          std::string(kDefaultMemoryPoolInitialCapacity)),
+      config::CapacityUnit::BYTE);
 }
 
 uint64_t SharedArbitrator::ExtraConfig::getMemoryPoolReservedCapacity(
     const std::unordered_map<std::string, std::string>& configs) {
-  return getConfig<uint64_t>(
-      configs, kMemoryPoolReservedCapacity, kDefaultMemoryPoolReservedCapacity);
+  return config::toCapacity(
+      getConfig<std::string>(
+          configs,
+          kMemoryPoolReservedCapacity,
+          std::string(kDefaultMemoryPoolReservedCapacity)),
+      config::CapacityUnit::BYTE);
 }
 
 uint64_t SharedArbitrator::ExtraConfig::getMemoryPoolTransferCapacity(
     const std::unordered_map<std::string, std::string>& configs) {
-  return getConfig<uint64_t>(
-      configs, kMemoryPoolTransferCapacity, kDefaultMemoryPoolTransferCapacity);
+  return config::toCapacity(
+      getConfig<std::string>(
+          configs,
+          kMemoryPoolTransferCapacity,
+          std::string(kDefaultMemoryPoolTransferCapacity)),
+      config::CapacityUnit::BYTE);
 }
 
-uint64_t SharedArbitrator::ExtraConfig::getMemoryReclaimWaitMs(
+uint64_t SharedArbitrator::ExtraConfig::getMemoryReclaimMaxWaitTimeMs(
     const std::unordered_map<std::string, std::string>& configs) {
-  return getConfig<uint64_t>(
-      configs, kMemoryReclaimWaitMs, kDefaultMemoryReclaimWaitMs);
+  return std::chrono::duration_cast<std::chrono::milliseconds>(
+             config::toDuration(getConfig<std::string>(
+                 configs,
+                 kMemoryReclaimMaxWaitTime,
+                 std::string(kDefaultMemoryReclaimMaxWaitTime))))
+      .count();
 }
 
 bool SharedArbitrator::ExtraConfig::getGlobalArbitrationEnabled(
@@ -131,7 +150,7 @@ SharedArbitrator::SharedArbitrator(const Config& config)
       memoryPoolTransferCapacity_(
           ExtraConfig::getMemoryPoolTransferCapacity(config.extraConfigs)),
       memoryReclaimWaitMs_(
-          ExtraConfig::getMemoryReclaimWaitMs(config.extraConfigs)),
+          ExtraConfig::getMemoryReclaimMaxWaitTimeMs(config.extraConfigs)),
       globalArbitrationEnabled_(
           ExtraConfig::getGlobalArbitrationEnabled(config.extraConfigs)),
       checkUsageLeak_(ExtraConfig::getCheckUsageLeak(config.extraConfigs)),
diff --git a/velox/common/memory/SharedArbitrator.h b/velox/common/memory/SharedArbitrator.h
index d1bc4d27da79..54cb81e86798 100644
--- a/velox/common/memory/SharedArbitrator.h
+++ b/velox/common/memory/SharedArbitrator.h
@@ -40,7 +40,7 @@ class SharedArbitrator : public memory::MemoryArbitrator {
     /// The memory capacity reserved to ensure each running query has minimal
     /// capacity of 'memoryPoolReservedCapacity' to run.
     static constexpr std::string_view kReservedCapacity{"reserved-capacity"};
-    static constexpr int64_t kDefaultReservedCapacity{0};
+    static constexpr std::string_view kDefaultReservedCapacity{"0B"};
     static int64_t getReservedCapacity(
         const std::unordered_map<std::string, std::string>& configs);
 
@@ -48,14 +48,15 @@ class SharedArbitrator : public memory::MemoryArbitrator {
     /// pool.
     static constexpr std::string_view kMemoryPoolInitialCapacity{
         "memory-pool-initial-capacity"};
-    static constexpr uint64_t kDefaultMemoryPoolInitialCapacity{256 << 20};
+    static constexpr std::string_view kDefaultMemoryPoolInitialCapacity{
+        "256MB"};
     static uint64_t getMemoryPoolInitialCapacity(
         const std::unordered_map<std::string, std::string>& configs);
 
     /// The minimal amount of memory capacity reserved for each query to run.
     static constexpr std::string_view kMemoryPoolReservedCapacity{
         "memory-pool-reserved-capacity"};
-    static constexpr uint64_t kDefaultMemoryPoolReservedCapacity{0};
+    static constexpr std::string_view kDefaultMemoryPoolReservedCapacity{"0B"};
     static uint64_t getMemoryPoolReservedCapacity(
         const std::unordered_map<std::string, std::string>& configs);
 
@@ -63,7 +64,8 @@ class SharedArbitrator : public memory::MemoryArbitrator {
     /// during the memory arbitration.
     static constexpr std::string_view kMemoryPoolTransferCapacity{
         "memory-pool-transfer-capacity"};
-    static constexpr uint64_t kDefaultMemoryPoolTransferCapacity{128 << 20};
+    static constexpr std::string_view kDefaultMemoryPoolTransferCapacity{
+        "128MB"};
     static uint64_t getMemoryPoolTransferCapacity(
         const std::unordered_map<std::string, std::string>& configs);
 
@@ -72,10 +74,10 @@ class SharedArbitrator : public memory::MemoryArbitrator {
     /// the memory arbitration from getting stuck when the memory reclaim waits
     /// for a hanging query task to pause. If it is zero, then there is no
     /// timeout.
-    static constexpr std::string_view kMemoryReclaimWaitMs{
-        "memory-reclaim-wait-ms"};
-    static constexpr uint64_t kDefaultMemoryReclaimWaitMs{0};
-    static uint64_t getMemoryReclaimWaitMs(
+    static constexpr std::string_view kMemoryReclaimMaxWaitTime{
+        "memory-reclaim-max-wait-time"};
+    static constexpr std::string_view kDefaultMemoryReclaimMaxWaitTime{"0ms"};
+    static uint64_t getMemoryReclaimMaxWaitTimeMs(
         const std::unordered_map<std::string, std::string>& configs);
 
     /// If true, it allows memory arbitrator to reclaim used memory cross query
diff --git a/velox/common/memory/tests/MockSharedArbitratorTest.cpp b/velox/common/memory/tests/MockSharedArbitratorTest.cpp
index ff037691e763..e90d6fbda31f 100644
--- a/velox/common/memory/tests/MockSharedArbitratorTest.cpp
+++ b/velox/common/memory/tests/MockSharedArbitratorTest.cpp
@@ -522,19 +522,20 @@ TEST_F(MockSharedArbitrationTest, extraConfigs) {
   // Testing default values
   std::unordered_map<std::string, std::string> emptyConfigs;
   ASSERT_EQ(
-      SharedArbitrator::ExtraConfig::getReservedCapacity(emptyConfigs),
-      SharedArbitrator::ExtraConfig::kDefaultReservedCapacity);
+      SharedArbitrator::ExtraConfig::getReservedCapacity(emptyConfigs), 0);
   ASSERT_EQ(
-      SharedArbitrator::ExtraConfig::getMemoryPoolReservedCapacity(
-          emptyConfigs),
-      SharedArbitrator::ExtraConfig::kDefaultMemoryPoolReservedCapacity);
+      SharedArbitrator::ExtraConfig::getReservedCapacity(emptyConfigs), 0);
+  ASSERT_EQ(
+      SharedArbitrator::ExtraConfig::getMemoryPoolInitialCapacity(emptyConfigs),
+      256 << 20);
   ASSERT_EQ(
       SharedArbitrator::ExtraConfig::getMemoryPoolTransferCapacity(
           emptyConfigs),
-      SharedArbitrator::ExtraConfig::kDefaultMemoryPoolTransferCapacity);
+      128 << 20);
   ASSERT_EQ(
-      SharedArbitrator::ExtraConfig::getMemoryReclaimWaitMs(emptyConfigs),
-      SharedArbitrator::ExtraConfig::kDefaultMemoryReclaimWaitMs);
+      SharedArbitrator::ExtraConfig::getMemoryReclaimMaxWaitTimeMs(
+          emptyConfigs),
+      0);
   ASSERT_EQ(
       SharedArbitrator::ExtraConfig::getGlobalArbitrationEnabled(emptyConfigs),
       SharedArbitrator::ExtraConfig::kDefaultGlobalArbitrationEnabled);
@@ -545,27 +546,32 @@ TEST_F(MockSharedArbitrationTest, extraConfigs) {
   // Testing custom values
   std::unordered_map<std::string, std::string> configs;
   configs[std::string(SharedArbitrator::ExtraConfig::kReservedCapacity)] =
-      "100";
+      "100B";
+  configs[std::string(
+      SharedArbitrator::ExtraConfig::kMemoryPoolInitialCapacity)] = "512MB";
   configs[std::string(
-      SharedArbitrator::ExtraConfig::kMemoryPoolReservedCapacity)] = "200";
+      SharedArbitrator::ExtraConfig::kMemoryPoolReservedCapacity)] = "200B";
   configs[std::string(
-      SharedArbitrator::ExtraConfig::kMemoryPoolTransferCapacity)] =
-      "256000000";
-  configs[std::string(SharedArbitrator::ExtraConfig::kMemoryReclaimWaitMs)] =
-      "5000";
+      SharedArbitrator::ExtraConfig::kMemoryPoolTransferCapacity)] = "256MB";
+  configs[std::string(
+      SharedArbitrator::ExtraConfig::kMemoryReclaimMaxWaitTime)] = "5000ms";
   configs[std::string(
       SharedArbitrator::ExtraConfig::kGlobalArbitrationEnabled)] = "true";
   configs[std::string(SharedArbitrator::ExtraConfig::kCheckUsageLeak)] =
       "false";
   ASSERT_EQ(SharedArbitrator::ExtraConfig::getReservedCapacity(configs), 100);
+  ASSERT_EQ(
+      SharedArbitrator::ExtraConfig::getMemoryPoolInitialCapacity(configs),
+      512 << 20);
   ASSERT_EQ(
       SharedArbitrator::ExtraConfig::getMemoryPoolReservedCapacity(configs),
       200);
   ASSERT_EQ(
       SharedArbitrator::ExtraConfig::getMemoryPoolTransferCapacity(configs),
-      256000000);
+      256 << 20);
   ASSERT_EQ(
-      SharedArbitrator::ExtraConfig::getMemoryReclaimWaitMs(configs), 5000);
+      SharedArbitrator::ExtraConfig::getMemoryReclaimMaxWaitTimeMs(configs),
+      5000);
   ASSERT_TRUE(
       SharedArbitrator::ExtraConfig::getGlobalArbitrationEnabled(configs));
   ASSERT_FALSE(SharedArbitrator::ExtraConfig::getCheckUsageLeak(configs));
@@ -573,28 +579,33 @@ TEST_F(MockSharedArbitrationTest, extraConfigs) {
   // Testing invalid values
   configs[std::string(SharedArbitrator::ExtraConfig::kReservedCapacity)] =
       "invalid";
+  configs[std::string(
+      SharedArbitrator::ExtraConfig::kMemoryPoolInitialCapacity)] = "invalid";
   configs[std::string(
       SharedArbitrator::ExtraConfig::kMemoryPoolReservedCapacity)] = "invalid";
   configs[std::string(
       SharedArbitrator::ExtraConfig::kMemoryPoolTransferCapacity)] = "invalid";
-  configs[std::string(SharedArbitrator::ExtraConfig::kMemoryReclaimWaitMs)] =
-      "invalid";
+  configs[std::string(
+      SharedArbitrator::ExtraConfig::kMemoryReclaimMaxWaitTime)] = "invalid";
   configs[std::string(
       SharedArbitrator::ExtraConfig::kGlobalArbitrationEnabled)] = "invalid";
   configs[std::string(SharedArbitrator::ExtraConfig::kCheckUsageLeak)] =
       "invalid";
   VELOX_ASSERT_THROW(
       SharedArbitrator::ExtraConfig::getReservedCapacity(configs),
-      "Failed while parsing SharedArbitrator configs");
+      "Invalid capacity string 'invalid'");
+  VELOX_ASSERT_THROW(
+      SharedArbitrator::ExtraConfig::getMemoryPoolInitialCapacity(configs),
+      "Invalid capacity string 'invalid'");
   VELOX_ASSERT_THROW(
       SharedArbitrator::ExtraConfig::getMemoryPoolReservedCapacity(configs),
-      "Failed while parsing SharedArbitrator configs");
+      "Invalid capacity string 'invalid'");
   VELOX_ASSERT_THROW(
       SharedArbitrator::ExtraConfig::getMemoryPoolTransferCapacity(configs),
-      "Failed while parsing SharedArbitrator configs");
+      "Invalid capacity string 'invalid'");
   VELOX_ASSERT_THROW(
-      SharedArbitrator::ExtraConfig::getMemoryReclaimWaitMs(configs),
-      "Failed while parsing SharedArbitrator configs");
+      SharedArbitrator::ExtraConfig::getMemoryReclaimMaxWaitTimeMs(configs),
+      "Invalid duration 'invalid'");
   VELOX_ASSERT_THROW(
       SharedArbitrator::ExtraConfig::getGlobalArbitrationEnabled(configs),
       "Failed while parsing SharedArbitrator configs");