From a7b4ee5512ee83fc9500ff3ef837631d357cd00b Mon Sep 17 00:00:00 2001
From: Ashwin Sekar <ashwin@solana.com>
Date: Wed, 15 Nov 2023 13:09:18 -0500
Subject: [PATCH] blockstore: make merkle root Optional in MerkleRootMeta
 column (#34091)

---
 ledger/src/blockstore_meta.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ledger/src/blockstore_meta.rs b/ledger/src/blockstore_meta.rs
index 625150847aa429..49a51bd21d42ae 100644
--- a/ledger/src/blockstore_meta.rs
+++ b/ledger/src/blockstore_meta.rs
@@ -140,8 +140,8 @@ pub(crate) struct ErasureConfig {
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
 pub struct MerkleRootMeta {
-    /// The merkle root
-    merkle_root: Hash,
+    /// The merkle root, `None` for legacy shreds
+    merkle_root: Option<Hash>,
     /// The first received shred index
     first_received_shred_index: u32,
     /// The shred type of the first received shred