From e58c223ad510db6065a7ed76cf28cc23c6badbed Mon Sep 17 00:00:00 2001
From: jinhai <hai.jin@zilliz.com>
Date: Mon, 9 Sep 2019 12:02:31 +0000
Subject: [PATCH] Fix memory double free issue due to random_device

Former-commit-id: 371a536cd0e80736d9333cff4178a6785097c87e
---
 cpp/src/scheduler/action/PushTaskToNeighbour.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpp/src/scheduler/action/PushTaskToNeighbour.cpp b/cpp/src/scheduler/action/PushTaskToNeighbour.cpp
index 200f6214fe..3de0165b0f 100644
--- a/cpp/src/scheduler/action/PushTaskToNeighbour.cpp
+++ b/cpp/src/scheduler/action/PushTaskToNeighbour.cpp
@@ -57,8 +57,8 @@ Action::PushTaskToNeighbourRandomly(const TaskPtr &task,
             total_speed += speed;
         }
 
-        std::random_device rd;
-        std::mt19937 mt(rd());
+        unsigned seed1 = std::chrono::system_clock::now().time_since_epoch().count();
+        std::mt19937 mt(seed1);
         std::uniform_int_distribution<int> dist(0, total_speed);
         uint64_t index = 0;
         int64_t rd_speed = dist(mt);