[umbrella task] Improve Namenode startup time
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Key: HDFS-2126
URL: https://issues.apache.org/jira/browse/HDFS-2126
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Affects Versions: 0.20.2
Reporter: Matt Foley
This is an umbrella task to group the improvements in Namenode startup latency
made over the last few months, and track remaining ideas.
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