On 01/31/12 17:02, Tommi Virtanen wrote:
To make my point even clearer: point me to another data store that has
that idiom.
(a) Automatic expiration and deletion is, and has long been, a
standard feature of archival systems ... and our RADOS
clouds are much larger than most archival systems.
(b) I have no competent opinions on the short term solution to this
particular problem, but in the longer term I do not believe
that garbage collection can or should be entrusted to clients.
Clients are ephemeral and cannot be depended on to remember,
a few years (or even hours) from now, that there were some
files they were supposed to delete.
IMHO, object store intelligence is not merely about back-ground
replication and migration, but about "being able to take
responsibility for the life cycle of the data they hold".
The amount of data we store will quickly grow beyond the
ability of external agents to manage it, and lifecycle
automation will become increasingly critical.
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