Fixing snapshot creation for earlier versions than the latest checkpoint

kernel/src/snapshot.rs

@@ -158,6 +158,8 @@ impl Snapshot {
                 _ => list_log_files(fs_client.as_ref(), &log_url)?,
             };
 
+        println!("Commit files: {:?}", commit_files.iter().map(|f| f.location.clone()).collect::<Vec<_>>());
+        println!("Checkpoint files: {:?}", checkpoint_files.iter().map(|f| f.location.clone()).collect::<Vec<_>>());
         // remove all files above requested version
         if let Some(version) = version {
             commit_files.retain(|meta| {
@@ -301,13 +303,18 @@ fn read_last_checkpoint(
     log_root: &Url,
 ) -> DeltaResult<Option<CheckpointMetadata>> {
     let file_path = LogPath::new(log_root).child(LAST_CHECKPOINT_FILE_NAME)?;
+    println!("Reading last checkpoint from: {}", file_path);
     match fs_client
         .read_files(vec![(file_path, None)])
         .and_then(|mut data| data.next().expect("read_files should return one file"))
     {
-        Ok(data) => Ok(serde_json::from_slice(&data)
+        Ok(data) => {
+            // print the data in bytes as a string 
+            println!("Data: {:?}", std::str::from_utf8(&data).unwrap());
+            Ok(serde_json::from_slice(&data)
             .inspect_err(|e| warn!("invalid _last_checkpoint JSON: {e}"))
-            .ok()),
+            .ok())
+        },
         Err(Error::FileNotFound(_)) => Ok(None),
         Err(err) => Err(err),
     }
@@ -546,4 +553,101 @@ mod tests {
             Some(3)
         );
     }
+
+    #[test]
+    fn test_snapshot_version_0_with_checkpoint_at_version_1() {
+        let path =
+            std::fs::canonicalize(PathBuf::from("./tests/data/app-txn-checkpoint/")).unwrap();
+        let url = url::Url::from_directory_path(path).unwrap();
+
+        let engine = SyncEngine::new();
+
+        // First, let's verify the content of the _last_checkpoint file
+        let fs_client = engine.get_file_system_client();
+        let log_url = LogPath::new(&url).child("_delta_log/").unwrap();
+        println!("Log root: {}", log_url);
+        let last_checkpoint = read_last_checkpoint(fs_client.as_ref(), &log_url).unwrap();
+
+        assert!(
+            last_checkpoint.is_some(),
+            "_last_checkpoint file should exist"
+        );
+        let checkpoint_meta = last_checkpoint.unwrap();
+        println!("Checkpoint metadata: {:#?}", checkpoint_meta);
+        assert_eq!(
+            checkpoint_meta.version, 1,
+            "Last checkpoint should be at version 1"
+        );
+        assert_eq!(checkpoint_meta.size, 8, "Checkpoint size should be 8");
+        // assert_eq!(
+        //     checkpoint_meta.size_in_bytes,
+        //     Some(21857),
+        //     "Checkpoint size in bytes should be 21857"
+        // );
+
+        // Now, request snapshot at version 0
+        let snapshot = Snapshot::try_new(url.clone(), &engine, Some(0));
+
+        match snapshot {
+            Ok(snap) => {
+                assert_eq!(snap.version(), 0, "Snapshot version should be 0");
+
+                // Verify that the snapshot contains the correct files
+                assert_eq!(
+                    snap.log_segment.commit_files.len(),
+                    1,
+                    "There should be one commit file"
+                );
+                assert_eq!(
+                    LogPath::new(&snap.log_segment.commit_files[0].location).version,
+                    Some(0),
+                    "The commit file should be version 0"
+                );
+
+                assert!(
+                    snap.log_segment.checkpoint_files.is_empty(),
+                    "Snapshot for version 0 should not contain checkpoint files"
+                );
+
+                // You might want to add more assertions here about the content of version 0
+            }
+            Err(e) => {
+                panic!("Failed to create snapshot for version 0: {:?}", e);
+            }
+        }
+
+        // Verify the snapshot at version 1 (the checkpoint version)
+        let snapshot_1 = Snapshot::try_new(url, &engine, Some(1)).unwrap();
+        assert_eq!(snapshot_1.version(), 1, "Snapshot version should be 1");
+        assert_eq!(
+            snapshot_1.log_segment.checkpoint_files.len(),
+            1,
+            "There should be one checkpoint file for version 1"
+        );
+        assert_eq!(
+            LogPath::new(&snapshot_1.log_segment.checkpoint_files[0].location).version,
+            Some(1),
+            "The checkpoint file should be version 1"
+        );
+    }
+
+    #[test]
+    fn test_snapshot_with_version_less_than_latest_checkpoint() {
+        let path = std::fs::canonicalize(PathBuf::from("./tests/data/multiple-checkpoint/")).unwrap();
+        let url = url::Url::from_directory_path(path).unwrap();
+
+        let engine = SyncEngine::new();
+
+        // Attempt to create a snapshot at version 10
+        let result = Snapshot::try_new(url, &engine, Some(10));
+
+        // Check if the operation succeeded
+        assert!(result.is_ok(), "Expected snapshot creation to succeed for version 10");
+
+        let snapshot = result.unwrap();
+
+        // Verify the snapshot properties
+        assert_eq!(snapshot.version(), 10, "Snapshot version should be 10");
+
+    }
 }

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000000.json

@@ -0,0 +1,4 @@
+{"protocol":{"minReaderVersion":1,"minWriterVersion":2}}
+{"metaData":{"id":"7f63b305-b7d1-4151-ac85-770932b6582d","name":null,"description":null,"format":{"provider":"parquet","options":{}},"schemaString":"{\"type\":\"struct\",\"fields\":[{\"name\":\"id\",\"type\":\"integer\",\"nullable\":false,\"metadata\":{}},{\"name\":\"value\",\"type\":\"string\",\"nullable\":false,\"metadata\":{}}]}","partitionColumns":[],"createdTime":1725530488008,"configuration":{}}}
+{"add":{"path":"part-00001-c7fed910-a531-4273-9f8c-80b935c60baf-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488019,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"F7jKTLb\",\"id\":14},\"maxValues\":{\"id\":60,\"value\":\"x21RiYO\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488020,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000001.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-4e6bc849-0634-49f9-98cc-6239fcaadec5-c000.snappy.parquet","partitionValues":{},"size":858,"modificationTime":1725530488034,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":33,\"value\":\"5FSXDXs\"},\"maxValues\":{\"id\":85,\"value\":\"YGU3NZT\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488034,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000002.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-c2a2c39f-d19a-41bd-b6b7-d7ca99cac849-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488043,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"3IZIUyp\",\"id\":11},\"maxValues\":{\"value\":\"uRjG8dk\",\"id\":69},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488043,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000003.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-e984043f-f3ee-4104-b60f-faceb1f04126-c000.snappy.parquet","partitionValues":{},"size":858,"modificationTime":1725530488051,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":22,\"value\":\"Gn9NBv0\"},\"maxValues\":{\"id\":92,\"value\":\"UfzjcgL\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488051,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000004.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-1092d017-2263-4d47-a73d-7b8903f79ac5-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488059,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"AGffh52\",\"id\":35},\"maxValues\":{\"value\":\"o3kV5mT\",\"id\":97},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488059,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000005.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-bad64600-079d-48c4-b6f7-f6a256427182-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488079,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":7,\"value\":\"6ouIqI8\"},\"maxValues\":{\"id\":81,\"value\":\"lzN28es\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488079,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000006.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-3b66979d-47ab-4fbd-9f16-2a00037eb098-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488097,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"30kBets\",\"id\":10},\"maxValues\":{\"id\":78,\"value\":\"enH9RLJ\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488098,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000007.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-ffabbcd0-c86d-4c96-a08e-8c20fcb05b56-c000.snappy.parquet","partitionValues":{},"size":865,"modificationTime":1725530488110,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"7NRr55w\",\"id\":51},\"maxValues\":{\"value\":\"akAH8Pj\",\"id\":85},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488111,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000008.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-c0519cba-e509-4ca7-8e58-e70f5a286e0a-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488124,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":37,\"value\":\"3gPueyH\"},\"maxValues\":{\"id\":98,\"value\":\"vQVIbcI\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488124,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000009.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-3816edee-8d6c-4cd3-8645-d757b5d17d41-c000.snappy.parquet","partitionValues":{},"size":865,"modificationTime":1725530488137,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":40,\"value\":\"3GVAdf4\"},\"maxValues\":{\"value\":\"ud06xMt\",\"id\":95},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488137,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000010.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-db982975-da7b-4fcd-a613-a3494678c23e-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488159,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"FKOg7MV\",\"id\":7},\"maxValues\":{\"id\":54,\"value\":\"sdIVoKi\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488159,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000011.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-bb0db258-0bc6-4b5c-8c81-3df5d2245111-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488172,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"5NjpmVx\",\"id\":4},\"maxValues\":{\"id\":87,\"value\":\"pCpzDPj\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488172,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000012.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-a723f04e-f49e-4881-aab4-bc7cd4677532-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488186,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"15SMv3m\",\"id\":21},\"maxValues\":{\"id\":76,\"value\":\"acZXfvx\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488186,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000013.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-e999f2d7-4989-43e4-8e7c-76aa339cd42e-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488201,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":31,\"value\":\"Zirdxyk\"},\"maxValues\":{\"id\":71,\"value\":\"njG7WMg\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488201,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000014.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-39fd00ae-0a83-4e5b-b555-c1ca23b47339-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488216,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"ACgqyBV\",\"id\":29},\"maxValues\":{\"value\":\"pK4bDUM\",\"id\":71},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488216,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000015.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-52dc2232-f68a-4e2e-9545-1eee3ee3f1e3-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488241,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"37WlqED\",\"id\":4},\"maxValues\":{\"id\":77,\"value\":\"T9Hdxe1\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488241,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000016.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-5e9ae675-eb91-4612-ae5a-035a0f734b75-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488256,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":6,\"value\":\"6CEq9q7\"},\"maxValues\":{\"value\":\"h5QUhgd\",\"id\":76},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488256,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000017.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-163a714c-5d25-40a0-82d7-7e8751b28118-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488271,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"8ERf8LC\",\"id\":4},\"maxValues\":{\"id\":77,\"value\":\"NYaGoaY\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488271,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000018.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-e34c711f-c5c6-4e79-ac62-021ebbd3c5c3-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488285,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":53,\"value\":\"66dZ0uI\"},\"maxValues\":{\"value\":\"yxSk13R\",\"id\":90},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488285,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000019.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-e659a621-cba2-4f7e-b130-ece5ec644e2e-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488300,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"OP5jNUt\",\"id\":49},\"maxValues\":{\"id\":71,\"value\":\"rkdUHdl\"},\"nullCount\":{\"value\":0,\"id\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488300,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000020.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-5714f047-47c8-4d1b-af9b-c84e0e65d19e-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488325,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"value\":\"2kT4Ljr\",\"id\":4},\"maxValues\":{\"id\":87,\"value\":\"IFtkbKc\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488325,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000021.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-19ca3da4-53af-4324-a641-b35c23e08a08-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488340,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":24,\"value\":\"1r7ne1k\"},\"maxValues\":{\"id\":94,\"value\":\"eLWH0ms\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488341,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}

kernel/tests/data/multiple-checkpoint/_delta_log/00000000000000000022.json

@@ -0,0 +1,2 @@
+{"add":{"path":"part-00001-651054c3-2a1c-4758-9a2b-1dcb29002e99-c000.snappy.parquet","partitionValues":{},"size":864,"modificationTime":1725530488356,"dataChange":true,"stats":"{\"numRecords\":4,\"minValues\":{\"id\":25,\"value\":\"2JkqfIN\"},\"maxValues\":{\"id\":76,\"value\":\"bOjhfiD\"},\"nullCount\":{\"id\":0,\"value\":0}}","tags":null,"deletionVector":null,"baseRowId":null,"defaultRowCommitVersion":null,"clusteringProvider":null}}
+{"commitInfo":{"timestamp":1725530488356,"operation":"WRITE","operationParameters":{"mode":"Append"},"clientVersion":"delta-rs.0.19.0"}}