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From "Edward Bortnikov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5477) Block manager as a service
Date Sat, 05 Apr 2014 19:07:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13961207#comment-13961207
] 

Edward Bortnikov commented on HDFS-5477:
----------------------------------------

Working on a new design doc following our fruitful discussions at Hadoop Summit - will post
in about a week. Stay tuned ...

> 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 - Implementation decisions.pdf, Proposal.pdf,
Proposal.pdf, Remote BM.pdf, Standalone BM.pdf, Standalone BM.pdf, patches.tar.gz
>
>
> 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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