[jira] [Resolved] (SPARK-15974) Create a socket on YARN AM start-up

["Marcelo Vanzin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15974?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcelo Vanzin resolved SPARK-15974.
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    Resolution: Won't Fix

The way this feature is proposed, I don't agree with it.

If instead you'd like to expose the user's socket port to YARN, that would be ok, but I think it would be kinda hard given how the code works.

> Create a socket on YARN AM start-up
> -----------------------------------
>
>                 Key: SPARK-15974
>                 URL: https://issues.apache.org/jira/browse/SPARK-15974
>             Project: Spark
>          Issue Type: New Feature
>          Components: YARN
>            Reporter: Mingyu Kim
>            Priority: Major
>
> YARN provides a way for AppilcationMaster to register a RPC port so that a client outside the YARN cluster can reach the application for any RPCs, but Spark’s YARN AMs simply register a dummy port number of 0. For the Spark programs that starts up a server, this makes it hard for the submitter to discover the server port securely. Spark's ApplicationMaster should optionally create a ServerSocket and pass it to the Spark user program. This socket initialization should be disabled by default.
> Some discussion on dev@spark thread: http://apache-spark-developers-list.1001551.n3.nabble.com/Utilizing-YARN-AM-RPC-port-field-td17892.html



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