auto-restart: only wait for local jobs running on localhost

CHANGES.md

@@ -70,6 +70,10 @@ templates in [runtime][X][environment].
 
 ### Fixes
 
+[#3815](https://github.com/cylc/cylc-flow/pull/3815) - Fixes a minor bug in the
+auto-restart functionality which caused suites to wait for local jobs running
+on *any* host to complete before restarting.
+
 [#3732](https://github.com/cylc/cylc-flow/pull/3732) - XTrigger labels
 are now validated to ensure that runtime errors can not occur when
 exporting environment variables.

cylc/flow/scheduler.py

@@ -47,7 +47,11 @@
 )
 import cylc.flow.flags
 from cylc.flow.host_select import select_suite_host
-from cylc.flow.hostuserutil import get_host, get_user
+from cylc.flow.hostuserutil import (
+    get_host,
+    get_user,
+    is_remote_platform
+)
 from cylc.flow.job_pool import JobPool
 from cylc.flow.loggingutil import (
     TimestampRotatingFileHandler,
@@ -1528,6 +1532,7 @@ async def suite_shutdown(self):
                 if (
                         itask.state(*TASK_STATUSES_ACTIVE)
                         and itask.summary['batch_sys_name']
+                        and not is_remote_platform(itask.platform)
                         and self.task_job_mgr.batch_sys_mgr
                         .is_job_local_to_host(
                             itask.summary['batch_sys_name'])