GitHub user jcderr opened a pull request:
https://github.com/apache/spark/pull/9975
fixes SPARK-11991
If `--private-ips` is required but not provided, spark_ec2.py may behave
inappropriately, including attempting to ssh to localhost in attempts to verify
ssh connectivity to the cluster.
This fixes that behavior by raising a `UsageError` exception if
`get_dns_name` is unable to determine a hostname as a result.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jcderr/spark
SPARK-11991/ec_spark.py_hostname_check
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9975.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #9975
----
commit caa10ae046bdd819ee6d1653934d43f104570f2b
Author: Jeremy Derr <[email protected]>
Date: 2015-11-25T17:03:42Z
fixes SPARK-11991
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