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https://issues.apache.org/jira/browse/HDFS-5477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844825#comment-13844825
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Yoonmin Nam commented on HDFS-5477:
-----------------------------------
The format of proposal document document looks weird. (The architecture of NN
goes beyond the boundary of paper)
> 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: Proposal.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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