From 27c2401f596d99a2dc2d5f5ba9c7482effe35bed Mon Sep 17 00:00:00 2001
From: Batuhan Taskaya <batuhanosmantaskaya@gmail.com>
Date: Mon, 22 Feb 2021 15:08:26 +0300
Subject: [PATCH] azure: transfer bigger chunks of data (#5504)

---
 dvc/fs/azure.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dvc/fs/azure.py b/dvc/fs/azure.py
index fddbc9395..46cbf9999 100644
--- a/dvc/fs/azure.py
+++ b/dvc/fs/azure.py
@@ -177,8 +177,12 @@ class AzureFileSystem(BaseFileSystem):
         return info
 
     def _upload_fobj(self, fobj, to_info):
+        from adlfs import AzureBlobFile
+
         with self.open(to_info, "wb") as fdest:
-            shutil.copyfileobj(fobj, fdest)
+            shutil.copyfileobj(
+                fobj, fdest, length=AzureBlobFile.DEFAULT_BLOCK_SIZE
+            )
 
     def _upload(
         self, from_file, to_info, name=None, no_progress_bar=False, **kwargs