From cab8f517b4137aa8914c18771d44e6b022c47d88 Mon Sep 17 00:00:00 2001
From: robcaulk <rob.caulk@gmail.com>
Date: Tue, 7 Jun 2022 01:07:30 +0200
Subject: [PATCH] add lock to datadrawer

---
 freqtrade/freqai/data_drawer.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/freqtrade/freqai/data_drawer.py b/freqtrade/freqai/data_drawer.py
index 740998caf..0fb399b58 100644
--- a/freqtrade/freqai/data_drawer.py
+++ b/freqtrade/freqai/data_drawer.py
@@ -5,6 +5,7 @@ import json
 import logging
 import re
 import shutil
+import threading
 from pathlib import Path
 from typing import Any, Dict, Tuple
 
@@ -44,6 +45,7 @@ class FreqaiDataDrawer:
             self.create_follower_dict()
         self.load_drawer_from_disk()
         self.training_queue: Dict[str, int] = {}
+        self.history_lock = threading.Lock()
         # self.create_training_queue(pair_whitelist)
 
     def load_drawer_from_disk(self):