feat: support append data file and add e2e test

Cargo.toml

@@ -18,11 +18,12 @@
 [workspace]
 resolver = "2"
 members = [
-  "crates/catalog/*",
-  "crates/examples",
-  "crates/iceberg",
-  "crates/integrations/*",
-  "crates/test_utils",
+    "crates/catalog/*",
+    "crates/examples",
+    "crates/iceberg",
+    "crates/integration_tests",
+    "crates/integrations/*",
+    "crates/test_utils",
 ]
 exclude = ["bindings/python"]
 

crates/catalog/rest/src/catalog.rs

@@ -1376,7 +1376,7 @@ mod tests {
             .with_schema_id(0)
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::from_iter([
+                additional_properties: HashMap::from_iter([
                     ("spark.app.id", "local-1646787004168"),
                     ("added-data-files", "1"),
                     ("added-records", "1"),

crates/iceberg/src/catalog/mod.rs

@@ -1423,7 +1423,7 @@ mod tests {
                 .with_schema_id(1)
                 .with_summary(Summary {
                     operation: Operation::Append,
-                    other: HashMap::default(),
+                    additional_properties: HashMap::default(),
                 })
                 .build(),
         };
@@ -1457,7 +1457,7 @@ mod tests {
                 .with_manifest_list("s3://a/b/2.avro")
                 .with_summary(Summary {
                     operation: Operation::Append,
-                    other: HashMap::default(),
+                    additional_properties: HashMap::default(),
                 })
                 .build(),
         };

crates/iceberg/src/io/object_cache.rs

@@ -185,7 +185,7 @@ mod tests {
     use crate::spec::{
         DataContentType, DataFileBuilder, DataFileFormat, FormatVersion, Literal, Manifest,
         ManifestContentType, ManifestEntry, ManifestListWriter, ManifestMetadata, ManifestStatus,
-        ManifestWriter, Struct, TableMetadata, EMPTY_SNAPSHOT_ID,
+        ManifestWriter, Struct, TableMetadata,
     };
     use crate::table::Table;
     use crate::TableIdent;
@@ -293,9 +293,7 @@ mod tests {
                     .new_output(current_snapshot.manifest_list())
                     .unwrap(),
                 current_snapshot.snapshot_id(),
-                current_snapshot
-                    .parent_snapshot_id()
-                    .unwrap_or(EMPTY_SNAPSHOT_ID),
+                current_snapshot.parent_snapshot_id(),
                 current_snapshot.sequence_number(),
             );
             manifest_list_write

crates/iceberg/src/scan.rs

@@ -977,7 +977,6 @@ mod tests {
         DataContentType, DataFileBuilder, DataFileFormat, Datum, FormatVersion, Literal, Manifest,
         ManifestContentType, ManifestEntry, ManifestListWriter, ManifestMetadata, ManifestStatus,
         ManifestWriter, NestedField, PrimitiveType, Schema, Struct, TableMetadata, Type,
-        EMPTY_SNAPSHOT_ID,
     };
     use crate::table::Table;
     use crate::TableIdent;
@@ -1124,9 +1123,7 @@ mod tests {
                     .new_output(current_snapshot.manifest_list())
                     .unwrap(),
                 current_snapshot.snapshot_id(),
-                current_snapshot
-                    .parent_snapshot_id()
-                    .unwrap_or(EMPTY_SNAPSHOT_ID),
+                current_snapshot.parent_snapshot_id(),
                 current_snapshot.sequence_number(),
             );
             manifest_list_write

crates/iceberg/src/spec/manifest.rs

@@ -900,6 +900,12 @@ impl ManifestEntry {
         }
     }
 
+    /// Snapshot id
+    #[inline]
+    pub fn snapshot_id(&self) -> Option<i64> {
+        self.snapshot_id
+    }
+
     /// Data sequence number.
     #[inline]
     pub fn sequence_number(&self) -> Option<i64> {
@@ -1328,7 +1334,7 @@ mod _serde {
             Ok(Self {
                 content: value.content as i32,
                 file_path: value.file_path,
-                file_format: value.file_format.to_string(),
+                file_format: value.file_format.to_string().to_ascii_uppercase(),
                 partition: RawLiteral::try_from(
                     Literal::Struct(value.partition),
                     &Type::Struct(partition_type.clone()),

crates/iceberg/src/spec/manifest_list.rs

@@ -106,34 +106,38 @@ impl std::fmt::Debug for ManifestListWriter {
 
 impl ManifestListWriter {
     /// Construct a v1 [`ManifestListWriter`] that writes to a provided [`OutputFile`].
-    pub fn v1(output_file: OutputFile, snapshot_id: i64, parent_snapshot_id: i64) -> Self {
-        let metadata = HashMap::from_iter([
+    pub fn v1(output_file: OutputFile, snapshot_id: i64, parent_snapshot_id: Option<i64>) -> Self {
+        let mut metadata = HashMap::from_iter([
             ("snapshot-id".to_string(), snapshot_id.to_string()),
-            (
-                "parent-snapshot-id".to_string(),
-                parent_snapshot_id.to_string(),
-            ),
             ("format-version".to_string(), "1".to_string()),
         ]);
+        if let Some(parent_snapshot_id) = parent_snapshot_id {
+            metadata.insert(
+                "parent-snapshot-id".to_string(),
+                parent_snapshot_id.to_string(),
+            );
+        }
         Self::new(FormatVersion::V1, output_file, metadata, 0, snapshot_id)
     }
 
     /// Construct a v2 [`ManifestListWriter`] that writes to a provided [`OutputFile`].
     pub fn v2(
         output_file: OutputFile,
         snapshot_id: i64,
-        parent_snapshot_id: i64,
+        parent_snapshot_id: Option<i64>,
         sequence_number: i64,
     ) -> Self {
-        let metadata = HashMap::from_iter([
+        let mut metadata = HashMap::from_iter([
             ("snapshot-id".to_string(), snapshot_id.to_string()),
-            (
-                "parent-snapshot-id".to_string(),
-                parent_snapshot_id.to_string(),
-            ),
             ("sequence-number".to_string(), sequence_number.to_string()),
             ("format-version".to_string(), "2".to_string()),
         ]);
+        metadata.insert(
+            "parent-snapshot-id".to_string(),
+            parent_snapshot_id
+                .map(|v| v.to_string())
+                .unwrap_or("null".to_string()),
+        );
         Self::new(
             FormatVersion::V2,
             output_file,
@@ -580,6 +584,18 @@ pub struct ManifestFile {
     pub key_metadata: Vec<u8>,
 }
 
+impl ManifestFile {
+    /// Checks if the manifest file has any added files.
+    pub fn has_added_files(&self) -> bool {
+        self.added_files_count.is_none() || self.added_files_count.unwrap() > 0
+    }
+
+    /// Checks if the manifest file has any existed files.
+    pub fn has_existing_files(&self) -> bool {
+        self.existing_files_count.is_none() || self.existing_files_count.unwrap() > 0
+    }
+}
+
 /// The type of files tracked by the manifest, either data or delete files; Data(0) for all v1 manifests
 #[derive(Debug, PartialEq, Clone, Eq)]
 pub enum ManifestContentType {
@@ -1146,7 +1162,7 @@ mod test {
         let mut writer = ManifestListWriter::v1(
             file_io.new_output(full_path.clone()).unwrap(),
             1646658105718557341,
-            1646658105718557341,
+            Some(1646658105718557341),
         );
 
         writer
@@ -1213,7 +1229,7 @@ mod test {
         let mut writer = ManifestListWriter::v2(
             file_io.new_output(full_path.clone()).unwrap(),
             1646658105718557341,
-            1646658105718557341,
+            Some(1646658105718557341),
             1,
         );
 
@@ -1335,7 +1351,7 @@ mod test {
         let io = FileIOBuilder::new_fs_io().build().unwrap();
         let output_file = io.new_output(path.to_str().unwrap()).unwrap();
 
-        let mut writer = ManifestListWriter::v1(output_file, 1646658105718557341, 0);
+        let mut writer = ManifestListWriter::v1(output_file, 1646658105718557341, Some(0));
         writer
             .add_manifests(expected_manifest_list.entries.clone().into_iter())
             .unwrap();
@@ -1391,7 +1407,7 @@ mod test {
         let io = FileIOBuilder::new_fs_io().build().unwrap();
         let output_file = io.new_output(path.to_str().unwrap()).unwrap();
 
-        let mut writer = ManifestListWriter::v2(output_file, snapshot_id, 0, seq_num);
+        let mut writer = ManifestListWriter::v2(output_file, snapshot_id, Some(0), seq_num);
         writer
             .add_manifests(expected_manifest_list.entries.clone().into_iter())
             .unwrap();
@@ -1445,7 +1461,7 @@ mod test {
         let io = FileIOBuilder::new_fs_io().build().unwrap();
         let output_file = io.new_output(path.to_str().unwrap()).unwrap();
 
-        let mut writer = ManifestListWriter::v2(output_file, 1646658105718557341, 0, 1);
+        let mut writer = ManifestListWriter::v2(output_file, 1646658105718557341, Some(0), 1);
         writer
             .add_manifests(expected_manifest_list.entries.clone().into_iter())
             .unwrap();

crates/iceberg/src/spec/snapshot.rs

@@ -59,7 +59,7 @@ pub struct Summary {
     pub operation: Operation,
     /// Other summary data.
     #[serde(flatten)]
-    pub other: HashMap<String, String>,
+    pub additional_properties: HashMap<String, String>,
 }
 
 impl Default for Operation {
@@ -291,7 +291,7 @@ pub(super) mod _serde {
                    },
                 summary: v1.summary.unwrap_or(Summary {
                     operation: Operation::default(),
-                    other: HashMap::new(),
+                    additional_properties: HashMap::new(),
                 }),
                 schema_id: v1.schema_id,
             })
@@ -372,6 +372,21 @@ pub enum SnapshotRetention {
     },
 }
 
+impl SnapshotRetention {
+    /// Create a new branch retention policy
+    pub fn branch(
+        min_snapshots_to_keep: Option<i32>,
+        max_snapshot_age_ms: Option<i64>,
+        max_ref_age_ms: Option<i64>,
+    ) -> Self {
+        SnapshotRetention::Branch {
+            min_snapshots_to_keep,
+            max_snapshot_age_ms,
+            max_ref_age_ms,
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use std::collections::HashMap;
@@ -408,7 +423,7 @@ mod tests {
         assert_eq!(
             Summary {
                 operation: Operation::Append,
-                other: HashMap::new()
+                additional_properties: HashMap::new()
             },
             *result.summary()
         );

crates/iceberg/src/spec/table_metadata.rs

@@ -201,6 +201,18 @@ impl TableMetadata {
         self.last_sequence_number
     }
 
+    /// Returns the next sequence number for the table.
+    ///
+    /// For format version 1, it always returns the initial sequence number.
+    /// For other versions, it returns the last sequence number incremented by 1.
+    #[inline]
+    pub fn next_sequence_number(&self) -> i64 {
+        match self.format_version {
+            FormatVersion::V1 => INITIAL_SEQUENCE_NUMBER,
+            _ => self.last_sequence_number + 1,
+        }
+    }
+
     /// Returns last updated time.
     #[inline]
     pub fn last_updated_timestamp(&self) -> Result<DateTime<Utc>> {
@@ -1476,7 +1488,7 @@ mod tests {
             .with_sequence_number(0)
             .with_schema_id(0)
             .with_manifest_list("/home/iceberg/warehouse/nyc/taxis/metadata/snap-638933773299822130-1-7e6760f0-4f6c-4b23-b907-0a5a174e3863.avro")
-            .with_summary(Summary { operation: Operation::Append, other: HashMap::from_iter(vec![("spark.app.id".to_string(), "local-1662532784305".to_string()), ("added-data-files".to_string(), "4".to_string()), ("added-records".to_string(), "4".to_string()), ("added-files-size".to_string(), "6001".to_string())]) })
+            .with_summary(Summary { operation: Operation::Append, additional_properties: HashMap::from_iter(vec![("spark.app.id".to_string(), "local-1662532784305".to_string()), ("added-data-files".to_string(), "4".to_string()), ("added-records".to_string(), "4".to_string()), ("added-files-size".to_string(), "6001".to_string())]) })
             .build();
 
         let expected = TableMetadata {
@@ -1895,7 +1907,7 @@ mod tests {
             .with_manifest_list("s3://a/b/1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::new(),
+                additional_properties: HashMap::new(),
             })
             .build();
 
@@ -1908,7 +1920,7 @@ mod tests {
             .with_manifest_list("s3://a/b/2.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::new(),
+                additional_properties: HashMap::new(),
             })
             .build();
 

crates/iceberg/src/spec/table_metadata_builder.rs

@@ -1818,7 +1818,7 @@ mod tests {
             .with_manifest_list("/snap-1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::from_iter(vec![
+                additional_properties: HashMap::from_iter(vec![
                     (
                         "spark.app.id".to_string(),
                         "local-1662532784305".to_string(),
@@ -1881,7 +1881,7 @@ mod tests {
             .with_manifest_list("/snap-1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::from_iter(vec![
+                additional_properties: HashMap::from_iter(vec![
                     (
                         "spark.app.id".to_string(),
                         "local-1662532784305".to_string(),
@@ -1901,7 +1901,7 @@ mod tests {
             .with_manifest_list("/snap-1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::from_iter(vec![
+                additional_properties: HashMap::from_iter(vec![
                     (
                         "spark.app.id".to_string(),
                         "local-1662532784305".to_string(),
@@ -1949,7 +1949,7 @@ mod tests {
             .with_manifest_list("/snap-1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::new(),
+                additional_properties: HashMap::new(),
             })
             .build();
 
@@ -1994,7 +1994,7 @@ mod tests {
             .with_manifest_list("/snap-1.avro")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::from_iter(vec![
+                additional_properties: HashMap::from_iter(vec![
                     (
                         "spark.app.id".to_string(),
                         "local-1662532784305".to_string(),
@@ -2114,7 +2114,7 @@ mod tests {
             .with_manifest_list("/snap-1")
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::new(),
+                additional_properties: HashMap::new(),
             })
             .build();
 
@@ -2140,7 +2140,7 @@ mod tests {
             .with_parent_snapshot_id(Some(1))
             .with_summary(Summary {
                 operation: Operation::Append,
-                other: HashMap::new(),
+                additional_properties: HashMap::new(),
             })
             .build();