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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9411) HDFS ZoneLabel support
Date Thu, 19 Nov 2015 08:26:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15013131#comment-15013131
] 

Vinayakumar B commented on HDFS-9411:
-------------------------------------

Thanks [~drankye] for your words.
I will get back to your questions as soon as possible.
-Thanks.

> HDFS ZoneLabel support
> ----------------------
>
>                 Key: HDFS-9411
>                 URL: https://issues.apache.org/jira/browse/HDFS-9411
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>         Attachments: HDFS_ZoneLabels-16112015.pdf
>
>
> HDFS currently stores data blocks on different datanodes chosen by BlockPlacement Policy.
These datanodes are random within the scope(local-rack/different-rack/nodegroup) of network
topology. 
> In Multi-tenant (Tenant can be user/service) scenario, blocks of any tenant can be on
any datanodes.
>  Based on applications of different tenant, sometimes datanode might get busy making
the other tenant's application to slow down. It would be better if admin's have a provision
to logically divide the cluster among multi-tenants.
> ZONE_LABELS can logically divide the cluster datanodes into multiple Zones.
> High level design doc to follow soon.



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