Github user GenTang commented on a diff in the pull request:
https://github.com/apache/spark/pull/3986#discussion_r23890734
--- Diff: ec2/spark_ec2.py ---
@@ -569,6 +569,8 @@ def launch_cluster(conn, opts, cluster_name):
master_nodes = master_res.instances
print "Launched master in %s, regid = %s" % (zone, master_res.id)
+ # Wait for the information of the just-launched instances to be
propagated within AWS
+ time.sleep(5)
--- End diff --
@nchammas
Maybe we should insert a print here to tell the client that we are waiting
for the information to be propagated, since there will be 5 seconds idle
between `launch master in` and `wait for the cluster to enter`.
How do you think?
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