From c35c420edcbbf895dd5c02db39831b175faa7329 Mon Sep 17 00:00:00 2001
From: John Spray <john@neon.tech>
Date: Sat, 20 Jul 2024 20:52:58 +0100
Subject: [PATCH] downgrade exhaustive assertion to debug

---
 .../src/tenant/storage_layer/inmemory_layer.rs       | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/pageserver/src/tenant/storage_layer/inmemory_layer.rs b/pageserver/src/tenant/storage_layer/inmemory_layer.rs
index 891693ce40..f2e0b87d67 100644
--- a/pageserver/src/tenant/storage_layer/inmemory_layer.rs
+++ b/pageserver/src/tenant/storage_layer/inmemory_layer.rs
@@ -619,8 +619,6 @@ impl InMemoryLayer {
     /// Records the end_lsn for non-dropped layers.
     /// `end_lsn` is exclusive
     pub async fn freeze(&self, end_lsn: Lsn) {
-        let inner = self.inner.write().await;
-
         assert!(
             self.start_lsn < end_lsn,
             "{} >= {}",
@@ -638,9 +636,13 @@ impl InMemoryLayer {
             })
             .expect("frozen_local_path_str set only once");
 
-        for vec_map in inner.index.values() {
-            for (lsn, _pos) in vec_map.as_slice() {
-                assert!(*lsn < end_lsn);
+        #[cfg(debug_assertions)]
+        {
+            let inner = self.inner.write().await;
+            for vec_map in inner.index.values() {
+                for (lsn, _pos) in vec_map.as_slice() {
+                    debug_assert!(*lsn < end_lsn);
+                }
             }
         }
     }