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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (HDFS-9411) HDFS NodeLabel support
Date Thu, 15 Sep 2016 17:47:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HDFS-9411 started by Vinayakumar B.
-------------------------------------------
> HDFS NodeLabel 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: HDFSNodeLabels-15-09-2016.pdf, HDFSNodeLabels-20-06-2016.pdf, 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.
> NodeLabels adds more options to user to specify constraints to select specific nodes
with specific requirements.
> High level design doc to follow soon.



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