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From "Edward Bortnikov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5477) Block manager as a service
Date Thu, 19 Jun 2014 12:37:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Edward Bortnikov updated HDFS-5477:
-----------------------------------

    Attachment: Block-Manager-as-a-Service.pdf

End-to-end specification and design of the Block-Manager-as-a-service feature, addressing
the issues raised in the past discussions. 

> Block manager as a service
> --------------------------
>
>                 Key: HDFS-5477
>                 URL: https://issues.apache.org/jira/browse/HDFS-5477
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: Block-Manager-as-a-Service.pdf, Proposal.pdf, Proposal.pdf, Standalone
BM.pdf, Standalone BM.pdf
>
>
> The block manager needs to evolve towards having the ability to run as a standalone service
to improve NN vertical and horizontal scalability.  The goal is reducing the memory footprint
of the NN proper to support larger namespaces, and improve overall performance by decoupling
the block manager from the namespace and its lock.  Ideally, a distinct BM will be transparent
to clients and DNs.



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