[jira] [Commented] (SAMZA-175) Bind AM Jetty server to 0

["Zhijie Shen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SAMZA-175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13938852#comment-13938852 ] 

Zhijie Shen commented on SAMZA-175:
-----------------------------------

Here's review board link: https://reviews.apache.org/r/19342/

> Bind AM Jetty server to 0
> -------------------------
>
>                 Key: SAMZA-175
>                 URL: https://issues.apache.org/jira/browse/SAMZA-175
>             Project: Samza
>          Issue Type: Bug
>          Components: yarn
>    Affects Versions: 0.6.0
>            Reporter: Chris Riccomini
>              Labels: newbie
>         Attachments: SAMZA-175.1.patch
>
>
> We currently bind YARN's AM Jetty server (both RPC and dashboard) by randomly selecting ports, then retrying if there's a port collision. It looks like Jetty supports fetching of a port after it's been bound (which we need to know, so we can report it to YARN), so we should just bind to 0 instead, and then get the port after the OS selects an open port for Jetty to use.
> Documentation here:
> http://www.eclipse.org/jetty/documentation/current/configuring-connectors.html
> Shows "port: The configured port for the connector or 0 a random available port may be used (selected port available via getLocalPort())."



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