diff --git a/src/common/base/src/mem_allocator/mmap.rs b/src/common/base/src/mem_allocator/mmap.rs
index 9fbffa6f7ab6e..b1cc700599e55 100644
--- a/src/common/base/src/mem_allocator/mmap.rs
+++ b/src/common/base/src/mem_allocator/mmap.rs
@@ -16,17 +16,20 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
+use crate::mem_allocator::JEAllocator;
+
 /// mmap allocator.
-/// This is used for some hash tables.
-/// T is a fallback inner allocator for some memory special case.
+/// For better performance, we use jemalloc as the inner allocator.
 #[derive(Debug, Clone, Copy, Default)]
-pub struct MmapAllocator<T> {
-    allocator: T,
+pub struct MmapAllocator {
+    allocator: JEAllocator,
 }
 
-impl<T> MmapAllocator<T> {
-    pub fn new(allocator: T) -> Self {
-        Self { allocator }
+impl MmapAllocator {
+    pub fn new() -> Self {
+        Self {
+            allocator: JEAllocator::default(),
+        }
     }
 }
 
@@ -46,7 +49,7 @@ pub mod linux {
 
     const THRESHOLD: usize = 64 << 20;
 
-    impl<T: Allocator> MmapAllocator<T> {
+    impl MmapAllocator {
         #[inline(always)]
         fn mmap_alloc(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
             debug_assert!(layout.align() <= page_size());
@@ -128,7 +131,7 @@ pub mod linux {
         }
     }
 
-    unsafe impl<T: Allocator> Allocator for MmapAllocator<T> {
+    unsafe impl Allocator for MmapAllocator {
         #[inline(always)]
         fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
             if layout.align() > page_size() {
@@ -310,7 +313,7 @@ pub mod not_linux {
 
     use super::MmapAllocator;
 
-    unsafe impl<T: Allocator> Allocator for MmapAllocator<T> {
+    unsafe impl Allocator for MmapAllocator {
         #[inline(always)]
         fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
             self.allocator.allocate(layout)
diff --git a/src/common/hashtable/src/hashtable.rs b/src/common/hashtable/src/hashtable.rs
index b4594388e3c27..4e6455373dc25 100644
--- a/src/common/hashtable/src/hashtable.rs
+++ b/src/common/hashtable/src/hashtable.rs
@@ -16,7 +16,6 @@ use std::alloc::Allocator;
 use std::intrinsics::unlikely;
 use std::mem::MaybeUninit;
 
-use common_base::mem_allocator::GlobalAllocator;
 use common_base::mem_allocator::MmapAllocator;
 
 use super::container::HeapContainer;
@@ -29,7 +28,7 @@ use super::traits::Keyable;
 use super::utils::ZeroEntry;
 use crate::FastHash;
 
-pub struct Hashtable<K, V, A = MmapAllocator<GlobalAllocator>>
+pub struct Hashtable<K, V, A = MmapAllocator>
 where
     K: Keyable,
     A: Allocator + Clone,
diff --git a/src/common/hashtable/src/lookup_hashtable.rs b/src/common/hashtable/src/lookup_hashtable.rs
index bba0f8af93a74..45ee54427f686 100644
--- a/src/common/hashtable/src/lookup_hashtable.rs
+++ b/src/common/hashtable/src/lookup_hashtable.rs
@@ -16,18 +16,13 @@ use std::alloc::Allocator;
 use std::mem;
 use std::mem::MaybeUninit;
 
-use common_base::mem_allocator::GlobalAllocator;
 use common_base::mem_allocator::MmapAllocator;
 
 use crate::table0::Entry;
 use crate::HashtableLike;
 
-pub struct LookupHashtable<
-    K: Sized,
-    const CAPACITY: usize,
-    V,
-    A: Allocator + Clone = MmapAllocator<GlobalAllocator>,
-> {
+pub struct LookupHashtable<K: Sized, const CAPACITY: usize, V, A: Allocator + Clone = MmapAllocator>
+{
     flags: Box<[bool; CAPACITY], A>,
     data: Box<[Entry<K, V>; CAPACITY], A>,
     len: usize,
diff --git a/src/common/hashtable/src/short_string_hashtable.rs b/src/common/hashtable/src/short_string_hashtable.rs
index 4a7954044b6e6..a65d57597605a 100644
--- a/src/common/hashtable/src/short_string_hashtable.rs
+++ b/src/common/hashtable/src/short_string_hashtable.rs
@@ -19,7 +19,6 @@ use std::num::NonZeroU64;
 use std::ptr::NonNull;
 
 use bumpalo::Bump;
-use common_base::mem_allocator::GlobalAllocator;
 use common_base::mem_allocator::MmapAllocator;
 
 use super::container::HeapContainer;
@@ -38,7 +37,7 @@ use crate::table_empty::TableEmpty;
 use crate::table_empty::TableEmptyIter;
 use crate::table_empty::TableEmptyIterMut;
 
-pub struct ShortStringHashtable<K, V, A = MmapAllocator<GlobalAllocator>>
+pub struct ShortStringHashtable<K, V, A = MmapAllocator>
 where
     K: UnsizedKeyable + ?Sized,
     A: Allocator + Clone,
diff --git a/src/common/hashtable/src/stack_hashtable.rs b/src/common/hashtable/src/stack_hashtable.rs
index 98b673d5563ca..5e58a9fd19388 100644
--- a/src/common/hashtable/src/stack_hashtable.rs
+++ b/src/common/hashtable/src/stack_hashtable.rs
@@ -16,7 +16,6 @@ use std::alloc::Allocator;
 use std::intrinsics::unlikely;
 use std::mem::MaybeUninit;
 
-use common_base::mem_allocator::GlobalAllocator;
 use common_base::mem_allocator::MmapAllocator;
 
 use super::container::StackContainer;
@@ -27,7 +26,7 @@ use super::table0::Table0IterMut;
 use super::traits::Keyable;
 use super::utils::ZeroEntry;
 
-pub struct StackHashtable<K, V, const N: usize = 16, A = MmapAllocator<GlobalAllocator>>
+pub struct StackHashtable<K, V, const N: usize = 16, A = MmapAllocator>
 where
     K: Keyable,
     A: Allocator + Clone,
diff --git a/src/common/hashtable/src/string_hashtable.rs b/src/common/hashtable/src/string_hashtable.rs
index 3cab512c116b9..5af6f4d6b9b21 100644
--- a/src/common/hashtable/src/string_hashtable.rs
+++ b/src/common/hashtable/src/string_hashtable.rs
@@ -17,7 +17,6 @@ use std::marker::PhantomData;
 use std::mem::MaybeUninit;
 
 use bumpalo::Bump;
-use common_base::mem_allocator::GlobalAllocator;
 use common_base::mem_allocator::MmapAllocator;
 
 use super::container::HeapContainer;
@@ -37,7 +36,7 @@ use crate::table_empty::TableEmptyIterMut;
 /// Simple unsized hashtable is used for storing unsized keys in arena. It can be worked with HashMethodSerializer.
 /// Different from `ShortStringHashTable`, it doesn't use adpative sub hashtable to store key values via key size.
 /// It can be considered as a minimal hashtable implementation of ShortStringHashTable
-pub struct StringHashtable<K, V, A = MmapAllocator<GlobalAllocator>>
+pub struct StringHashtable<K, V, A = MmapAllocator>
 where
     K: UnsizedKeyable + ?Sized,
     A: Allocator + Clone,