Matteo Bertozzi created HBASE-6233:
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Summary: [brainstorm] snapshots: hardlink alternatives
Key: HBASE-6233
URL: https://issues.apache.org/jira/browse/HBASE-6233
Project: HBase
Issue Type: Brainstorming
Reporter: Matteo Bertozzi
Assignee: Matteo Bertozzi
Discussion ticket around snapshots and hardlink alternatives.
(See the HDFS-3370 discussion about hardlink and implementation problems)
(taking for a moment WAL out of the discussion and focusing on hfiles)
With hardlinks available taking snapshot will be fairly easy:
* (hfiles are immutable)
* hardlink to .snapshot/name to take snapshot
* hardlink from .snapshot/name to restore the snapshot
* No code change needed (on fs.delete() only one reference is deleted)
but we don't have hardlinks, what are the alternatives?
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