From 2a903b904a3f9f0cb44118337cc975db1a12e24b Mon Sep 17 00:00:00 2001
From: Ameer Haj Ali <ameer@anyscale.com>
Date: Wed, 3 Feb 2021 10:23:20 +0200
Subject: [PATCH] [joblib] Log once the context warning argument. (#13865)

Co-authored-by: Ameer Haj Ali <ameerhajali@ameers-mbp.lan>
Co-authored-by: Alex Wu <alex@anyscale.io>
Co-authored-by: Alex Wu <itswu.alex@gmail.com>
Co-authored-by: Eric Liang <ekhliang@gmail.com>
Co-authored-by: Ameer Haj Ali <ameerhajali@Ameers-MacBook-Pro.local>
---
 python/ray/util/multiprocessing/pool.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/python/ray/util/multiprocessing/pool.py b/python/ray/util/multiprocessing/pool.py
index 9910bc3a4..b74e10279 100644
--- a/python/ray/util/multiprocessing/pool.py
+++ b/python/ray/util/multiprocessing/pool.py
@@ -9,6 +9,7 @@ import queue
 import copy
 
 import ray
+from ray.util import log_once
 
 logger = logging.getLogger(__name__)
 
@@ -336,7 +337,7 @@ class Pool:
         self._maxtasksperchild = maxtasksperchild or -1
         self._actor_deletion_ids = []
 
-        if context:
+        if context and log_once("context_argument_warning"):
             logger.warning("The 'context' argument is not supported using "
                            "ray. Please refer to the documentation for how "
                            "to control ray initialization.")