From 0080c970751cdac3f6b205553ef99a0138187599 Mon Sep 17 00:00:00 2001
From: Jiaming Yuan <jm.yuan@outlook.com>
Date: Thu, 21 Sep 2023 01:09:36 +0800
Subject: [PATCH] Workaround poll on macos. (#9596)

---
 rabit/src/allreduce_base.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/rabit/src/allreduce_base.cc b/rabit/src/allreduce_base.cc
index 04246b5a1..416801ee2 100644
--- a/rabit/src/allreduce_base.cc
+++ b/rabit/src/allreduce_base.cc
@@ -549,7 +549,7 @@ AllreduceBase::TryAllreduceTree(void *sendrecvbuf_,
       break;
     }
     // select must return
-    auto poll_res = watcher.Poll(timeout_sec);
+    auto poll_res = watcher.Poll(timeout_sec, false);  // fail on macos
     if (!poll_res.OK()) {
       LOG(FATAL) << poll_res.Report();
     }
@@ -814,7 +814,7 @@ AllreduceBase::TryAllgatherRing(void *sendrecvbuf_, size_t total_size,
       break;
     }
 
-    auto poll_res = watcher.Poll(timeout_sec);
+    auto poll_res = watcher.Poll(timeout_sec, false);  // fail on macos
     if (!poll_res.OK()) {
       LOG(FATAL) << poll_res.Report();
     }
@@ -919,7 +919,7 @@ AllreduceBase::TryReduceScatterRing(void *sendrecvbuf_,
     if (finished) {
       break;
     }
-    auto poll_res = watcher.Poll(timeout_sec);
+    auto poll_res = watcher.Poll(timeout_sec, false);  // fail on macos
     if (!poll_res.OK()) {
       LOG(FATAL) << poll_res.Report();
     }