From 0b61692019a9504d8e3cbe051a47475a2b9a510b Mon Sep 17 00:00:00 2001
From: franz <franz@rungalileo.io>
Date: Thu, 7 Mar 2024 00:25:40 +0100
Subject: [PATCH] release_gil

---
 python/src/lib.rs | 90 ++++++++++++++++++++++++-----------------------
 1 file changed, 46 insertions(+), 44 deletions(-)

diff --git a/python/src/lib.rs b/python/src/lib.rs
index 5963a42216..d2d39592ac 100644
--- a/python/src/lib.rs
+++ b/python/src/lib.rs
@@ -1401,60 +1401,62 @@ fn write_to_deltalake(
     writer_properties: Option<HashMap<String, Option<String>>>,
     custom_metadata: Option<HashMap<String, String>>,
 ) -> PyResult<()> {
-    let batches = data.0.map(|batch| batch.unwrap()).collect::<Vec<_>>();
-    let save_mode = mode.parse().map_err(PythonError::from)?;
+    py.allow_threads(|| {
+        let batches = data.0.map(|batch| batch.unwrap()).collect::<Vec<_>>();
+        let save_mode = mode.parse().map_err(PythonError::from)?;
 
-    let options = storage_options.clone().unwrap_or_default();
-    let table = rt()?
-        .block_on(DeltaOps::try_from_uri_with_storage_options(
-            &table_uri, options,
-        ))
-        .map_err(PythonError::from)?;
+        let options = storage_options.clone().unwrap_or_default();
+        let table = rt()?
+            .block_on(DeltaOps::try_from_uri_with_storage_options(
+                &table_uri, options,
+            ))
+            .map_err(PythonError::from)?;
 
-    let mut builder = table
-        .write(batches)
-        .with_save_mode(save_mode)
-        .with_write_batch_size(max_rows_per_group as usize);
-    if let Some(schema_mode) = schema_mode {
-        builder = builder.with_schema_mode(schema_mode.parse().map_err(PythonError::from)?);
-    }
-    if let Some(partition_columns) = partition_by {
-        builder = builder.with_partition_columns(partition_columns);
-    }
+        let mut builder = table
+            .write(batches)
+            .with_save_mode(save_mode)
+            .with_write_batch_size(max_rows_per_group as usize);
+        if let Some(schema_mode) = schema_mode {
+            builder = builder.with_schema_mode(schema_mode.parse().map_err(PythonError::from)?);
+        }
+        if let Some(partition_columns) = partition_by {
+            builder = builder.with_partition_columns(partition_columns);
+        }
 
-    if let Some(writer_props) = writer_properties {
-        builder = builder.with_writer_properties(
-            set_writer_properties(writer_props).map_err(PythonError::from)?,
-        );
-    }
+        if let Some(writer_props) = writer_properties {
+            builder = builder.with_writer_properties(
+                set_writer_properties(writer_props).map_err(PythonError::from)?,
+            );
+        }
 
-    if let Some(name) = &name {
-        builder = builder.with_table_name(name);
-    };
+        if let Some(name) = &name {
+            builder = builder.with_table_name(name);
+        };
 
-    if let Some(description) = &description {
-        builder = builder.with_description(description);
-    };
+        if let Some(description) = &description {
+            builder = builder.with_description(description);
+        };
 
-    if let Some(predicate) = predicate {
-        builder = builder.with_replace_where(predicate);
-    };
+        if let Some(predicate) = predicate {
+            builder = builder.with_replace_where(predicate);
+        };
 
-    if let Some(config) = configuration {
-        builder = builder.with_configuration(config);
-    };
+        if let Some(config) = configuration {
+            builder = builder.with_configuration(config);
+        };
 
-    if let Some(metadata) = custom_metadata {
-        let json_metadata: Map<String, Value> =
-            metadata.into_iter().map(|(k, v)| (k, v.into())).collect();
-        builder = builder.with_metadata(json_metadata);
-    };
+        if let Some(metadata) = custom_metadata {
+            let json_metadata: Map<String, Value> =
+                metadata.into_iter().map(|(k, v)| (k, v.into())).collect();
+            builder = builder.with_metadata(json_metadata);
+        };
 
-    rt()?
-        .block_on(builder.into_future())
-        .map_err(PythonError::from)?;
+        rt()?
+            .block_on(builder.into_future())
+            .map_err(PythonError::from)?;
 
-    Ok(())
+        Ok(())
+    })
 }
 
 #[pyfunction]