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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