timoninmaxim commented on a change in pull request #8352:
URL: https://github.com/apache/ignite/pull/8352#discussion_r510861671
##########
File path: modules/ducktests/tests/ignitetest/tests/self_test.py
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@@ -53,3 +55,38 @@ def test_assertion_convertion(self, ignite_version):
else:
app.stop()
assert False
+
+ def test_clock_sync(self):
+ """
+ Tests if clocks are synchronized between nodes.
+ """
+
+ service = GetTimeService(self.test_context,
self.test_context.cluster.num_available_nodes())
+ service.start()
+
+ service.clocks.sort(key=operator.itemgetter(1))
+
+ for _ in service.clocks:
+ self.logger.info("NodeClock[%s] = %d" % (_[0], _[1]))
+
+ max_clock_spread_ms = 300
+ min_res = service.clocks[0]
+ max_res = service.clocks[-1]
+ assert max_res[1] - min_res[1] < max_clock_spread_ms, \
+ "Clock difference between %s and %s exceeds %d ms." % (min_res[0],
max_res[0], max_clock_spread_ms)
+
+
+class GetTimeService(BackgroundThreadService):
+ """
+ Collects clock timestamps from a set of nodes.
+ """
+
+ def __init__(self, context, num_nodes):
+ super().__init__(context, num_nodes)
+ self.clocks = []
+
+ def start_node(self, node):
+ self.clocks.append((node.name, int(node.account.ssh_output("date
+%s"))))
Review comment:
`date +%s` returns seconds. But max_clock_spread_ms is milliseconds.
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