From e2e6ef198bb281151b7fd0ab478d44b2066c8f55 Mon Sep 17 00:00:00 2001
From: Peiren Yang <yangpeiren@163.com>
Date: Sun, 3 Mar 2019 22:46:07 +0100
Subject: [PATCH] [autoscaler] Make commands `bash -i` to support newer bash
 (#4181)

The generated command in autoscaler/updater.py throws non-zero exit status 127 on Ubuntu 18.04.

## Related issue number
Closes #4155, Closes #1444.
---
 python/ray/autoscaler/updater.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/python/ray/autoscaler/updater.py b/python/ray/autoscaler/updater.py
index 17f4ad1c2..36aec9bf0 100644
--- a/python/ray/autoscaler/updater.py
+++ b/python/ray/autoscaler/updater.py
@@ -271,9 +271,10 @@ class NodeUpdater(object):
             ssh.append("-tt")
         if emulate_interactive:
             force_interactive = (
-                "set -i || true && source ~/.bashrc && "
+                "true && source ~/.bashrc && "
                 "export OMP_NUM_THREADS=1 PYTHONWARNINGS=ignore && ")
-            cmd = "bash --login -c {}".format(quote(force_interactive + cmd))
+            cmd = "bash --login -c -i {}".format(
+                quote(force_interactive + cmd))
 
         if port_forward is None:
             ssh_opt = []