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https://issues.apache.org/jira/browse/SPARK-5668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311264#comment-14311264
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Apache Spark commented on SPARK-5668:
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User 'MiguelPeralvo' has created a pull request for this issue:
https://github.com/apache/spark/pull/4457
> spark_ec2.py region parameter could be either mandatory or its value displayed
> ------------------------------------------------------------------------------
>
> Key: SPARK-5668
> URL: https://issues.apache.org/jira/browse/SPARK-5668
> Project: Spark
> Issue Type: Improvement
> Components: EC2
> Affects Versions: 1.2.0, 1.3.0, 1.4.0
> Reporter: Miguel Peralvo
> Priority: Minor
> Labels: starter
>
> If the region parameter is not specified when invoking spark-ec2
> (spark-ec2.py behind the scenes) it defaults to us-east-1. When the cluster
> doesn't belong to that region, after showing the "Searching for existing
> cluster Spark..." message, it causes an "ERROR: Could not find any existing
> cluster" exception because it doesn't find you cluster in the default region.
> As it doesn't tell you anything about the region, It can be a small headache
> for new users.
> In
> http://stackoverflow.com/questions/21171576/why-does-spark-ec2-fail-with-error-could-not-find-any-existing-cluster,
> Dmitriy Selivanov explains it.
> I propose that:
> 1. Either we make the search message a little bit more informative with
> something like "Searching for existing cluster Spark in region " +
> opts.region.
> 2. Or we remove the us-east-1 as default and make the --region parameter
> mandatory.
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