Tsz Wo (Nicholas), SZE created HDFS-4125:
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Summary: Use a persistent data structure for snapshots
Key: HDFS-4125
URL: https://issues.apache.org/jira/browse/HDFS-4125
Project: Hadoop HDFS
Issue Type: Sub-task
Components: name-node
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Suresh Srinivas
There is a well-known data structure supportting
O(1) snapshot creation,
O(1) access slowdown, and
O(1) modification space and time.
See http://www.cs.cmu.edu/~sleator/papers/Persistence.htm
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