diff --git a/core/src/accounts_hash_verifier.rs b/core/src/accounts_hash_verifier.rs
index c9904b3272..4574b19919 100644
--- a/core/src/accounts_hash_verifier.rs
+++ b/core/src/accounts_hash_verifier.rs
@@ -6,11 +6,9 @@
 
 use {
     crossbeam_channel::RecvTimeoutError,
-    rayon::ThreadPool,
     solana_gossip::cluster_info::{ClusterInfo, MAX_SNAPSHOT_HASHES},
     solana_measure::measure::Measure,
     solana_runtime::{
-        accounts_db,
         accounts_hash::{CalcAccountsHashConfig, HashStats},
         snapshot_config::SnapshotConfig,
         snapshot_package::{
@@ -54,7 +52,6 @@ impl AccountsHashVerifier {
             .name("solana-hash-accounts".to_string())
             .spawn(move || {
                 let mut hashes = vec![];
-                let mut thread_pool = None;
                 loop {
                     if exit.load(Ordering::Relaxed) {
                         break;
@@ -62,11 +59,6 @@ impl AccountsHashVerifier {
 
                     match accounts_package_receiver.recv_timeout(Duration::from_secs(1)) {
                         Ok(accounts_package) => {
-                            if accounts_package.hash_for_testing.is_some() && thread_pool.is_none()
-                            {
-                                thread_pool = Some(accounts_db::make_min_priority_thread_pool());
-                            }
-
                             Self::process_accounts_package(
                                 accounts_package,
                                 &cluster_info,
@@ -77,7 +69,6 @@ impl AccountsHashVerifier {
                                 &exit,
                                 fault_injection_rate_slots,
                                 snapshot_config.as_ref(),
-                                thread_pool.as_ref(),
                                 &ledger_path,
                             );
                         }
@@ -103,10 +94,9 @@ impl AccountsHashVerifier {
         exit: &Arc<AtomicBool>,
         fault_injection_rate_slots: u64,
         snapshot_config: Option<&SnapshotConfig>,
-        thread_pool: Option<&ThreadPool>,
         ledger_path: &Path,
     ) {
-        Self::verify_accounts_package_hash(&accounts_package, thread_pool, ledger_path);
+        Self::verify_accounts_package_hash(&accounts_package, ledger_path);
 
         Self::push_accounts_hashes_to_cluster(
             &accounts_package,
@@ -121,11 +111,7 @@ impl AccountsHashVerifier {
         Self::submit_for_packaging(accounts_package, pending_snapshot_package, snapshot_config);
     }
 
-    fn verify_accounts_package_hash(
-        accounts_package: &AccountsPackage,
-        thread_pool: Option<&ThreadPool>,
-        ledger_path: &Path,
-    ) {
+    fn verify_accounts_package_hash(accounts_package: &AccountsPackage, ledger_path: &Path) {
         let mut measure_hash = Measure::start("hash");
         if let Some(expected_hash) = accounts_package.hash_for_testing {
             let sorted_storages = SortedStorages::new(&accounts_package.snapshot_storages);
@@ -135,7 +121,7 @@ impl AccountsHashVerifier {
                 .calculate_accounts_hash_without_index(&mut CalcAccountsHashConfig {
                     accounts_hash_cache_path: ledger_path,
                     storages: &sorted_storages,
-                    thread_pool,
+                    use_bg_thread_pool: true,
                     stats: HashStats::default(),
                     check_hash: false,
                     accounts_cache_and_ancestors: None,
@@ -387,7 +373,6 @@ mod tests {
                 &exit,
                 0,
                 Some(&snapshot_config),
-                None,
                 ledger_path.path(),
             );
 
diff --git a/runtime/src/accounts_db.rs b/runtime/src/accounts_db.rs
index ba868ab416..7889a61d8e 100644
--- a/runtime/src/accounts_db.rs
+++ b/runtime/src/accounts_db.rs
@@ -5521,15 +5521,10 @@ impl AccountsDb {
                 ..HashStats::default()
             };
 
-            let thread_pool = if is_startup {
-                None
-            } else {
-                Some(&self.thread_pool_clean)
-            };
             self.calculate_accounts_hash_without_index(&mut CalcAccountsHashConfig {
                 accounts_hash_cache_path: &self.accounts_hash_cache_path,
                 storages: &storages,
-                thread_pool,
+                use_bg_thread_pool: !is_startup,
                 stats: timings,
                 check_hash,
                 accounts_cache_and_ancestors,
@@ -5735,7 +5730,7 @@ impl AccountsDb {
     ) -> Result<(Hash, u64), BankHashVerificationError> {
         let (num_hash_scan_passes, bins_per_pass) =
             Self::bins_per_pass(config.num_hash_scan_passes);
-        let thread_pool = config.thread_pool;
+        let use_bg_thread_pool = config.use_bg_thread_pool;
         let mut scan_and_hash = move || {
             let mut previous_pass = PreviousPass::default();
             let mut final_result = (Hash::default(), 0);
@@ -5780,8 +5775,8 @@ impl AccountsDb {
             );
             Ok(final_result)
         };
-        if let Some(thread_pool) = thread_pool {
-            thread_pool.install(scan_and_hash)
+        if use_bg_thread_pool {
+            self.thread_pool_clean.install(scan_and_hash)
         } else {
             scan_and_hash()
         }
@@ -7910,7 +7905,7 @@ pub mod tests {
             .calculate_accounts_hash_without_index(&mut CalcAccountsHashConfig {
                 accounts_hash_cache_path: TempDir::new().unwrap().path(),
                 storages: &get_storage_refs(&storages),
-                thread_pool: None,
+                use_bg_thread_pool: false,
                 stats: HashStats::default(),
                 check_hash: false,
                 accounts_cache_and_ancestors: None,
@@ -7937,7 +7932,7 @@ pub mod tests {
             .calculate_accounts_hash_without_index(&mut CalcAccountsHashConfig {
                 accounts_hash_cache_path: TempDir::new().unwrap().path(),
                 storages: &get_storage_refs(&storages),
-                thread_pool: None,
+                use_bg_thread_pool: false,
                 stats: HashStats::default(),
                 check_hash: false,
                 accounts_cache_and_ancestors: None,
diff --git a/runtime/src/accounts_hash.rs b/runtime/src/accounts_hash.rs
index 7c8b69234d..7014f7301d 100644
--- a/runtime/src/accounts_hash.rs
+++ b/runtime/src/accounts_hash.rs
@@ -4,7 +4,7 @@ use {
         sorted_storages::SortedStorages,
     },
     log::*,
-    rayon::{prelude::*, ThreadPool},
+    rayon::prelude::*,
     solana_measure::measure::Measure,
     solana_sdk::{
         hash::{Hash, Hasher},
@@ -26,7 +26,7 @@ pub struct PreviousPass {
 pub struct CalcAccountsHashConfig<'a> {
     pub accounts_hash_cache_path: &'a Path,
     pub storages: &'a SortedStorages<'a>,
-    pub thread_pool: Option<&'a ThreadPool>,
+    pub use_bg_thread_pool: bool,
     pub stats: HashStats,
     pub check_hash: bool,
     pub accounts_cache_and_ancestors: Option<(