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https://issues.apache.org/jira/browse/SPARK-632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin closed SPARK-632.
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Resolution: Fixed
> Akka system names need to be normalized (since they are case-sensitive)
> -----------------------------------------------------------------------
>
> Key: SPARK-632
> URL: https://issues.apache.org/jira/browse/SPARK-632
> Project: Spark
> Issue Type: Bug
> Reporter: Matt Massie
>
> The "system" name of the Akka full path is case-sensitive (see
> http://akka.io/faq/#what_is_the_name_of_a_remote_actor).
> Since DNS names are case-insensitive and we're using them in the "system"
> name, we need to normalize them (e.g. make them all lowercase). Otherwise,
> users will find the "workers" will not be able to connect with the "master"
> even though the URI appears to be correct.
> For example, Berkeley DNS occasionally uses names e.g. foo.Berkley.EDU. If I
> used foo.berkeley.edu as the master adddress, the workers would write to
> their logs that they are connecting to foo.berkeley.edu but failed to. They
> never show up in the master UI. If use the foo.Berkeley.EDU address,
> everything works as it should.
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