[jira] [Commented] (YARN-2681) Support bandwidth enforcement for containers while reading from HDFS

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

    [ https://issues.apache.org/jira/browse/YARN-2681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14176350#comment-14176350 ] 

haosdent commented on YARN-2681:
--------------------------------

If data is transfer from domain socket, we couldn't use tc.

> Support bandwidth enforcement for containers while reading from HDFS
> --------------------------------------------------------------------
>
>                 Key: YARN-2681
>                 URL: https://issues.apache.org/jira/browse/YARN-2681
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: capacityscheduler, nodemanager, resourcemanager
>    Affects Versions: 2.4.0
>         Environment: Linux
>            Reporter: cntic
>         Attachments: Traffic Control Design.png
>
>
> To read/write data from HDFS on data node, applications establise TCP/IP connections with the datanode. The HDFS read can be controled by setting Linux Traffic Control  (TC) subsystem on the data node to make filters on appropriate connections.
> The current cgroups net_cls concept can not be applied on the node where the container is launched, netheir on data node since:
> -   TC hanldes outgoing bandwidth only, so it can be set on container node (HDFS read = incoming data for the container)
> -   Since HDFS data node is handled by only one process,  it is not possible to use net_cls to separate connections from different containers to the datanode.
> Tasks:
> 1) Extend Resource model to define bandwidth enforcement rate
> 2) Monitor TCP/IP connection estabilised by container handling process and its child processes
> 3) Set Linux Traffic Control rules on data node base on address:port pairs in order to enforce bandwidth of outgoing data



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