From 43a5ed3139e6d3611bbd2e34127b212536a4a55b Mon Sep 17 00:00:00 2001
From: behzad nouri <behzadnouri@gmail.com>
Date: Fri, 30 Jun 2023 15:17:56 +0000
Subject: [PATCH] rolls out merkle shreds to ~5% of mainnet slots (#32337)

---
 turbine/src/broadcast_stage/standard_broadcast_run.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/turbine/src/broadcast_stage/standard_broadcast_run.rs b/turbine/src/broadcast_stage/standard_broadcast_run.rs
index e8e43c938..3e51609e4 100644
--- a/turbine/src/broadcast_stage/standard_broadcast_run.rs
+++ b/turbine/src/broadcast_stage/standard_broadcast_run.rs
@@ -501,8 +501,11 @@ impl BroadcastRun for StandardBroadcastRun {
     }
 }
 
-fn should_use_merkle_variant(_: Slot, cluster_type: ClusterType, shred_version: u16) -> bool {
-    cluster_type == ClusterType::Testnet && shred_version == 28353
+fn should_use_merkle_variant(slot: Slot, cluster_type: ClusterType, shred_version: u16) -> bool {
+    match cluster_type {
+        ClusterType::Testnet => shred_version == 28353,
+        _ => (slot % 19) == 1,
+    }
 }
 
 #[cfg(test)]