feat: upgrade to delta_kernel 0.4.1 🎉

This change includes some minor warnings cleanup which were pestering
me too.

Closes #3015

Signed-off-by: R. Tyler Croy <rtyler@brokenco.de>

Cargo.toml

@@ -26,7 +26,7 @@ debug = true
 debug = "line-tables-only"
 
 [workspace.dependencies]
-delta_kernel = { version = "0.3.1" }
+delta_kernel = { version = "0.4.1", features = ["sync-engine"] }
 # delta_kernel = { path = "../delta-kernel-rs/kernel", version = "0.3.0" }
 
 # arrow

crates/core/src/delta_datafusion/expr.rs

@@ -28,7 +28,6 @@ use arrow_schema::{DataType, Field};
 use chrono::{DateTime, NaiveDate};
 use datafusion::execution::context::SessionState;
 use datafusion::execution::session_state::SessionStateBuilder;
-use datafusion::execution::FunctionRegistry;
 use datafusion::functions_array::make_array::MakeArray;
 use datafusion_common::Result as DFResult;
 use datafusion_common::{config::ConfigOptions, DFSchema, Result, ScalarValue, TableReference};

crates/core/src/kernel/snapshot/log_data.rs

@@ -2,9 +2,7 @@ use std::borrow::Cow;
 use std::collections::HashMap;
 use std::sync::Arc;
 
-use arrow_array::{
-    Array, Int32Array, Int64Array, MapArray, RecordBatch, StringArray, StructArray, UInt64Array,
-};
+use arrow_array::{Array, Int32Array, Int64Array, MapArray, RecordBatch, StringArray, StructArray};
 use chrono::{DateTime, Utc};
 use delta_kernel::expressions::Scalar;
 use indexmap::IndexMap;
@@ -484,7 +482,7 @@ mod datafusion {
     use ::datafusion::physical_plan::Accumulator;
     use arrow::compute::concat_batches;
     use arrow_arith::aggregate::sum;
-    use arrow_array::{ArrayRef, BooleanArray, Int64Array};
+    use arrow_array::{ArrayRef, BooleanArray, Int64Array, UInt64Array};
     use arrow_schema::DataType as ArrowDataType;
     use datafusion_common::scalar::ScalarValue;
     use datafusion_common::stats::{ColumnStatistics, Precision, Statistics};

crates/core/src/kernel/snapshot/mod.rs

@@ -220,24 +220,14 @@ impl Snapshot {
         schema_actions.insert(ActionType::Add);
         let checkpoint_stream = self.log_segment.checkpoint_stream(
             store.clone(),
-            &StructType::new(
-                schema_actions
-                    .iter()
-                    .map(|a| a.schema_field().clone())
-                    .collect(),
-            ),
+            &StructType::new(schema_actions.iter().map(|a| a.schema_field().clone())),
             &self.config,
         );
 
         schema_actions.insert(ActionType::Remove);
         let log_stream = self.log_segment.commit_stream(
             store.clone(),
-            &StructType::new(
-                schema_actions
-                    .iter()
-                    .map(|a| a.schema_field().clone())
-                    .collect(),
-            ),
+            &StructType::new(schema_actions.iter().map(|a| a.schema_field().clone())),
             &self.config,
         )?;
 
@@ -460,12 +450,8 @@ impl EagerSnapshot {
             // NOTE: we don't need to add the visitor relevant data here, as it is repüresented in teh state already
             futures::stream::iter(files.into_iter().map(Ok)).boxed()
         } else {
-            let read_schema = StructType::new(
-                schema_actions
-                    .iter()
-                    .map(|a| a.schema_field().clone())
-                    .collect(),
-            );
+            let read_schema =
+                StructType::new(schema_actions.iter().map(|a| a.schema_field().clone()));
             new_slice
                 .checkpoint_stream(
                     log_store.object_store(),
@@ -476,12 +462,7 @@ impl EagerSnapshot {
         };
 
         schema_actions.insert(ActionType::Remove);
-        let read_schema = StructType::new(
-            schema_actions
-                .iter()
-                .map(|a| a.schema_field().clone())
-                .collect(),
-        );
+        let read_schema = StructType::new(schema_actions.iter().map(|a| a.schema_field().clone()));
         let log_stream = new_slice.commit_stream(
             log_store.object_store().clone(),
             &read_schema,
@@ -618,12 +599,7 @@ impl EagerSnapshot {
         let mut schema_actions: HashSet<_> =
             visitors.iter().flat_map(|v| v.required_actions()).collect();
         schema_actions.extend([ActionType::Add, ActionType::Remove]);
-        let read_schema = StructType::new(
-            schema_actions
-                .iter()
-                .map(|a| a.schema_field().clone())
-                .collect(),
-        );
+        let read_schema = StructType::new(schema_actions.iter().map(|a| a.schema_field().clone()));
         let actions = self.snapshot.log_segment.advance(
             send,
             &self.table_root(),
@@ -712,7 +688,7 @@ fn stats_schema(schema: &StructType, config: TableConfig<'_>) -> DeltaResult<Str
         StructField::new("maxValues", StructType::new(stats_fields.clone()), true),
         StructField::new(
             "nullCount",
-            StructType::new(stats_fields.iter().filter_map(to_count_field).collect()),
+            StructType::new(stats_fields.iter().filter_map(to_count_field)),
             true,
         ),
     ]))
@@ -751,8 +727,7 @@ fn stats_field(idx: usize, num_indexed_cols: i32, field: &StructField) -> Option
             StructType::new(
                 dt_struct
                     .fields()
-                    .flat_map(|f| stats_field(idx, num_indexed_cols, f))
-                    .collect(),
+                    .flat_map(|f| stats_field(idx, num_indexed_cols, f)),
             ),
             true,
         )),
@@ -769,7 +744,7 @@ fn to_count_field(field: &StructField) -> Option<StructField> {
         DataType::Map(_) | DataType::Array(_) | &DataType::BINARY => None,
         DataType::Struct(s) => Some(StructField::new(
             field.name(),
-            StructType::new(s.fields().filter_map(to_count_field).collect::<Vec<_>>()),
+            StructType::new(s.fields().filter_map(to_count_field)),
             true,
         )),
         _ => Some(StructField::new(field.name(), DataType::LONG, true)),

crates/core/src/operations/optimize.rs

@@ -40,7 +40,6 @@ use parquet::errors::ParquetError;
 use parquet::file::properties::WriterProperties;
 use serde::{de::Error as DeError, Deserialize, Deserializer, Serialize, Serializer};
 use tracing::*;
-use url::Url;
 
 use super::transaction::PROTOCOL;
 use super::writer::{PartitionWriter, PartitionWriterConfig};
@@ -1213,6 +1212,8 @@ pub(super) mod zorder {
     #[cfg(feature = "datafusion")]
     pub(super) mod datafusion {
         use super::*;
+        use url::Url;
+
         use ::datafusion::{
             execution::{
                 memory_pool::FairSpillPool,
@@ -1245,7 +1246,7 @@ pub(super) mod zorder {
 
                 let memory_pool = FairSpillPool::new(max_spill_size);
                 let config = RuntimeConfig::new().with_memory_pool(Arc::new(memory_pool));
-                let runtime = Arc::new(RuntimeEnv::new(config)?);
+                let runtime = Arc::new(RuntimeEnv::try_new(config)?);
                 runtime.register_object_store(&Url::parse("delta-rs://").unwrap(), object_store);
 
                 let ctx = SessionContext::new_with_config_rt(SessionConfig::default(), runtime);

crates/core/src/operations/update.rs

@@ -517,7 +517,6 @@ mod tests {
         get_arrow_schema, get_delta_schema, get_record_batch, setup_table_with_configuration,
     };
     use crate::{DeltaTable, TableProperty};
-    use arrow::array::types::Int32Type;
     use arrow::array::{Int32Array, ListArray, StringArray};
     use arrow::datatypes::Schema as ArrowSchema;
     use arrow::datatypes::{Field, Schema};

crates/core/src/test_utils/factories/actions.rs

@@ -76,8 +76,7 @@ impl ActionFactory {
             schema
                 .fields()
                 .filter(|f| !partition_columns.contains(f.name()))
-                .cloned()
-                .collect(),
+                .cloned(),
         );
 
         let batch = DataFactory::record_batch(&data_schema, 10, &bounds).unwrap();