From 787079669faed15434768236a8e2285c734f3343 Mon Sep 17 00:00:00 2001
From: allegroai <>
Date: Thu, 11 Feb 2021 14:28:05 +0200
Subject: [PATCH] Fix exception at exit in python 3.8+ on macOS/Windows

---
 clearml/utilities/process/mp.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/clearml/utilities/process/mp.py b/clearml/utilities/process/mp.py
index b810a414..225c7480 100644
--- a/clearml/utilities/process/mp.py
+++ b/clearml/utilities/process/mp.py
@@ -216,7 +216,16 @@ class BackgroundMonitor(object):
                     current_process()._config['daemon'] = False  # noqa
             except BaseException:
                 pass
-            BackgroundMonitor._main_process.start()
+            # try to start the background process, if we fail retry again, or crash
+            for i in range(4):
+                try:
+                    BackgroundMonitor._main_process.start()
+                    break
+                except BaseException:
+                    if i < 3:
+                        sleep(1)
+                        continue
+                    raise
             if un_daemonize:
                 # noinspection PyBroadException
                 try: