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Nathan Roberts updated HDFS-5477: --------------------------------- Attachment: Proposal.pdf Fix formatting problems in PDF. > 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, 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. -- This message was sent by Atlassian JIRA (v6.1.4#6159)