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The "Operations" page has been changed by JonathanEllis. The comment on this change is: r/m obsolete advice about flush-before-snapshot. http://wiki.apache.org/cassandra/Operations?action=diff&rev1=58&rev2=59 -------------------------------------------------- This can be worked around depending on the operating system by either creating a swap file, snapshotting, turning it off or by turning on "memory overcommit". Since the child process memory is the same as the parent, until it performs an `exec("ln")` call the operating system will not use the new memory and will just refer to the old one, and everything will work. - Currently, only flushed data is snapshotted (not data that only exists in the commitlog). Run `nodetool flush` first and wait for that to complete, to make sure you get '''all''' data in the snapshot. - To revert to a snapshot, shut down the node, clear out the old commitlog and sstables, and move the sstables from the snapshot location to the live data directory. === Consistent backups ===
