Aaron T. Myers created HDFS-5027:
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Summary: On startup, DN should scan volumes in parallel
Key: HDFS-5027
URL: https://issues.apache.org/jira/browse/HDFS-5027
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 2.0.4-alpha
Reporter: Aaron T. Myers
Assignee: Aaron T. Myers
On startup the DN must scan all replicas on all configured volumes before the
initial block report to the NN. This is currently done serially, but can be
done in parallel to improve startup time of the DN.
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