[jira] [Commented] (YARN-5168) Add port mapping handling when docker container use bridge network

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

    [ https://issues.apache.org/jira/browse/YARN-5168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15303422#comment-15303422 ] 

tangzhankun commented on YARN-5168:
-----------------------------------

[~hex108], Thanks for filling this jira! My considerations are:
1. For item3, do you mean adding DNS like service registry in YARN or just provide API for querying container port on the host (container.getNodeId().getPort())?
2. We know that YARN provides network IO isolation ( traffic only ) in YARN-2140. But what I'm thinking is that the SLA stuffs may be delegated to Docker because it's possible that Docker network plugin will provide such ability in future.
And the network ports seems can be one kind of resource too (in bridge mode)?
If any error, please correct me. 

> Add port mapping handling when docker container use bridge network
> ------------------------------------------------------------------
>
>                 Key: YARN-5168
>                 URL: https://issues.apache.org/jira/browse/YARN-5168
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jun Gong
>
> YARN-4007 addresses different network setups when launching the docker container. We need support port mapping when docker container uses bridge network.
> The following problems are what we faced:
> 1. Add "-P" to map docker container's exposed ports to automatically.
> 2. Add "-p" to let user specify specific ports to map.
> 3. Add service registry support for bridge network case, then app could find each other. It could be done out of YARN, however it might be more convenient to support it natively in YARN.



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