Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3596#discussion_r21341088
--- Diff: ec2/spark_ec2.py ---
@@ -504,9 +504,9 @@ def get_existing_cluster(conn, opts, cluster_name,
die_on_error=True):
active = [i for i in res.instances if is_active(i)]
for inst in active:
group_names = [g.name for g in inst.groups]
- if group_names == [cluster_name + "-master"]:
+ if cluster_name + "-master" in group_names:
--- End diff --
Minor nit, but I think it's clearer to add parentheses here to make the
operator precedence more clear. I'm going to do this myself while merging.
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