Github user nchammas commented on the pull request:
https://github.com/apache/spark/pull/4262#issuecomment-72294957
OK, I added the dots back in. It doesn't look great, but it's serviceable:
```
$ ./ec2/spark-ec2 -k key -i /good/path/pem --instance-type m3.medium
--slaves 40 --zone us-east-1c launch "spark-test"
Setting up security groups...
Searching for existing cluster spark-test...
Spark AMI: ami-35b1885c
Launching instances...
Launched 40 slaves in us-east-1c, regid = r-811e646a
Launched master in us-east-1c, regid = r-501c66bb
Waiting for cluster to enter 'ssh-ready' state...........
Warning: SSH connection error. (This could be temporary.)
Host: 54.54.54.54
SSH return code: 255
SSH output: ssh: connect to host 54.54.54.54 port 22: Connection refused
.
Warning: SSH connection error. (This could be temporary.)
Host: 54.54.54.54
SSH return code: 255
SSH output: ssh: connect to host 54.54.54.54 port 22: Connection refused
.
Cluster is now in 'ssh-ready' state. Waited 517 seconds.
Generating cluster's SSH key on master...
```
That's what we get in the case of a temporary failure while SSH is still
coming up.
In the case of a permanent failure, you just get the repeated `.` on a
separate line followed by the 4-line error report:
```
$ ./ec2/spark-ec2 -k key -i /wrong/path/pem --instance-type m3.medium
--slaves 1 --zone us-east-1c launch "spark-test"
Setting up security groups...
Searching for existing cluster spark-test...
Spark AMI: ami-35b1885c
Launching instances...
Launched 1 slaves in us-east-1c, regid = r-283248c3
Launched master in us-east-1c, regid = r-2b3248c0
Waiting for cluster to enter 'ssh-ready' state..............
Warning: SSH connection error. (This could be temporary.)
Host: 54.54.54.54
SSH return code: 255
SSH output: Warning: Identity file /wrong/path/pem not accessible: No such
file or directory.
Warning: Permanently added '54.54.54.54' (RSA) to the list of known hosts.
Permission denied (publickey).
.
Warning: SSH connection error. (This could be temporary.)
Host: 54.54.54.54
SSH return code: 255
SSH output: Warning: Identity file /wrong/path/pem not accessible: No such
file or directory.
Permission denied (publickey).
.
...
```
What do you think?
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