From be824ede0d68df09af181e87039f8a3bed1cce76 Mon Sep 17 00:00:00 2001
From: skshetry <18718008+skshetry@users.noreply.github.com>
Date: Wed, 15 Feb 2023 16:25:45 +0545
Subject: [PATCH] render: avoid deepcopying (#9033)

* render: avoid deepcopying

* remove unnecessary line
---
 dvc/render/convert.py        | 4 +---
 dvc/render/converter/vega.py | 3 +--
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/dvc/render/convert.py b/dvc/render/convert.py
index dec94b5cd..828f5383b 100644
--- a/dvc/render/convert.py
+++ b/dvc/render/convert.py
@@ -29,10 +29,8 @@ def _group_by_rev(datapoints):
 
 
 def to_json(renderer, split: bool = False) -> List[Dict]:
-    from copy import deepcopy
-
     if renderer.TYPE == "vega":
-        grouped = _group_by_rev(deepcopy(renderer.datapoints))
+        grouped = _group_by_rev(renderer.datapoints)
         if split:
             content = renderer.get_filled_template(skip_anchors=["data"])
         else:
diff --git a/dvc/render/converter/vega.py b/dvc/render/converter/vega.py
index 705e0ecae..258a06aec 100644
--- a/dvc/render/converter/vega.py
+++ b/dvc/render/converter/vega.py
@@ -1,4 +1,3 @@
-from copy import deepcopy
 from typing import Any, Dict, Iterable, List, Optional, Tuple, Union
 
 from funcy import first, last
@@ -233,7 +232,7 @@ class VegaConverter(Converter):
         for i, (y_file, y_field) in enumerate(ys):
             if num_xs > 1:
                 x_file, x_field = xs[i]
-            datapoints = deepcopy(file2datapoints.get(y_file, []))
+            datapoints = [d.copy() for d in file2datapoints.get(y_file, [])]
 
             if props_update.get("y", None) == "dvc_inferred_y_value":
                 _update_from_field(