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https://issues.apache.org/jira/browse/SPARK-6636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14488245#comment-14488245
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Nicholas Chammas commented on SPARK-6636:
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[~aasted] - Can you elaborate on this? I haven't used private-network-only
security groups before. Why wouldn't the IP address work if that kind of
security group is used?
Just curious since, naively speaking, the public IP and public DNS name should
always be interchangeable.
> Use public DNS hostname everywhere in spark_ec2.py
> --------------------------------------------------
>
> Key: SPARK-6636
> URL: https://issues.apache.org/jira/browse/SPARK-6636
> Project: Spark
> Issue Type: Bug
> Components: EC2
> Reporter: Matt Aasted
> Assignee: Matt Aasted
> Priority: Minor
> Fix For: 1.3.2, 1.4.0
>
>
> The spark_ec2.py script uses public_dns_name everywhere in the script except
> for testing ssh availability, which is done using the public ip address of
> the instances. This breaks the script for users who are deploying the cluster
> with a private-network-only security group. The fix is to use public_dns_name
> in the remaining place.
> I am submitting a pull-request alongside this bug report.
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