Github user shivaram commented on a diff in the pull request:
https://github.com/apache/spark/pull/4916#discussion_r25999599
--- Diff: ec2/spark_ec2.py ---
@@ -1259,6 +1259,15 @@ def real_main():
cluster_instances=(master_nodes + slave_nodes),
cluster_state='ssh-ready'
)
+
+ # Determine types of running instances
+ existing_master_type = master_nodes[0].instance_type
+ existing_slave_type = slave_nodes[0].instance_type
+ if existing_master_type == existing_slave_type:
--- End diff --
The setting of `master_instance_type = ""` seems unnecessary even if its
the same as slave_instance_type ?
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