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Posted to hdfs-dev@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2013/11/08 02:24:17 UTC

[jira] [Created] (HDFS-5477) Block manager as a service

Daryn Sharp created HDFS-5477:
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             Summary: 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


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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