3 ms·

Ah. So that probably means a consistent copy or backup is probably practically impossible.

• asto 14y ago
  Unless it locks when backing up or copying?
  • fdr 14y ago
    Yes. But then the data is not available or other transactions will fail to commit during a long backup operation, and most people don't like that.
• viraptor 14y ago
  They do list in features: > Coming soon. An integrated backup system provides a true "moment-in-time" snapshot backup of the entire distributed database stored to a remote file system on a schedule.
• thebigjc 14y ago
  Snapshops / backups with MVCC isn't that complicated - you take a snapshot of the versions, and then backup the data at that version.
  • fdr 14y ago
    It is not complex, but it is very burdensome, usually because various garbage collection processes cannot act as long as the long snapshot is open.