From 326f43d644009913570a45c9c6ca7ba1d800529b Mon Sep 17 00:00:00 2001
From: "Jeff Washington (jwash)" <wash678@gmail.com>
Date: Tue, 23 Aug 2022 09:18:48 -0500
Subject: [PATCH] don't mark ancient append vecs as dirty wrt clean (#27312)

---
 runtime/src/accounts_db.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/runtime/src/accounts_db.rs b/runtime/src/accounts_db.rs
index 8882dcae303cb5..711687cb59f20c 100644
--- a/runtime/src/accounts_db.rs
+++ b/runtime/src/accounts_db.rs
@@ -6739,8 +6739,13 @@ impl AccountsDb {
         for (slot, storages) in storages.iter_range(..in_epoch_range_start) {
             if let Some(storages) = storages {
                 storages.iter().for_each(|store| {
-                    self.dirty_stores
-                        .insert((slot, store.append_vec_id()), store.clone());
+                    if !is_ancient(&store.accounts) {
+                        // ancient stores are managed separately - we expect them to be old and keeping accounts
+                        // We can expect the normal processes will keep them cleaned.
+                        // If we included them here then ALL accounts in ALL ancient append vecs will be visited by clean each time.
+                        self.dirty_stores
+                            .insert((slot, store.append_vec_id()), store.clone());
+                    }
                 });
             }
         }