From efa698d43b72de61a68911f2b6391d77f4d65d4d Mon Sep 17 00:00:00 2001
From: congyi <15605187270@163.com>
Date: Wed, 26 Mar 2025 22:02:18 +0800
Subject: [PATCH 1/3] public txn.generate_unique_snapshot_id

---
 crates/iceberg/src/spec/manifest/_serde.rs | 2 +-
 crates/iceberg/src/transaction/mod.rs      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/iceberg/src/spec/manifest/_serde.rs b/crates/iceberg/src/spec/manifest/_serde.rs
index 0f15479d95..40e707f62b 100644
--- a/crates/iceberg/src/spec/manifest/_serde.rs
+++ b/crates/iceberg/src/spec/manifest/_serde.rs
@@ -97,7 +97,7 @@ impl ManifestEntryV1 {
 }
 
 #[serde_as]
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Clone)]
 /// Data file
 pub struct DataFileSerde {
     #[serde(default)]
diff --git a/crates/iceberg/src/transaction/mod.rs b/crates/iceberg/src/transaction/mod.rs
index d79747a8c6..25524ef6fd 100644
--- a/crates/iceberg/src/transaction/mod.rs
+++ b/crates/iceberg/src/transaction/mod.rs
@@ -131,7 +131,7 @@ impl<'a> Transaction<'a> {
         Ok(self)
     }
 
-    fn generate_unique_snapshot_id(&self) -> i64 {
+    pub fn generate_unique_snapshot_id(&self) -> i64 {
         let generate_random_id = || -> i64 {
             let (lhs, rhs) = Uuid::new_v4().as_u64_pair();
             let snapshot_id = (lhs ^ rhs) as i64;

From 9f37306d8ba3e98dfb6d416a611e137cd50a8685 Mon Sep 17 00:00:00 2001
From: congyi <15605187270@163.com>
Date: Wed, 26 Mar 2025 22:09:50 +0800
Subject: [PATCH 2/3] add comment

---
 crates/iceberg/src/transaction/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/iceberg/src/transaction/mod.rs b/crates/iceberg/src/transaction/mod.rs
index 25524ef6fd..245898a582 100644
--- a/crates/iceberg/src/transaction/mod.rs
+++ b/crates/iceberg/src/transaction/mod.rs
@@ -131,6 +131,7 @@ impl<'a> Transaction<'a> {
         Ok(self)
     }
 
+    /// Generate a new `snapshot_id`.
     pub fn generate_unique_snapshot_id(&self) -> i64 {
         let generate_random_id = || -> i64 {
             let (lhs, rhs) = Uuid::new_v4().as_u64_pair();

From 2a7201831daf1a1e30f5d053bdb6056cb41ff93e Mon Sep 17 00:00:00 2001
From: congyi <15605187270@163.com>
Date: Thu, 27 Mar 2025 10:36:52 +0800
Subject: [PATCH 3/3] empty commit for retry