Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/2339#discussion_r17510336
--- Diff: ec2/spark_ec2.py ---
@@ -608,14 +597,53 @@ def setup_spark_cluster(master, opts):
print "Ganglia started at http://%s:5080/ganglia"; % master
-# Wait for a whole cluster (masters, slaves and ZooKeeper) to start up
-def wait_for_cluster(conn, wait_secs, master_nodes, slave_nodes):
- print "Waiting for instances to start up..."
- time.sleep(5)
- wait_for_instances(conn, master_nodes)
- wait_for_instances(conn, slave_nodes)
- print "Waiting %d more seconds..." % wait_secs
- time.sleep(wait_secs)
+def is_ssh_available(host, opts):
+ "Checks if SSH is available on the host."
+ try:
+ with open(os.devnull, 'w') as devnull:
+ ret = subprocess.check_call(
+ ssh_command(opts) +
+ ['-t', '-t',
--- End diff --
Is there a rhyme or reason to the spacing here? In the past we've typically
tried to avoid line breaks when possible, but I don't know if PEP8 has anything
to say about how long to go before breaking a line.
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