New file streaming for tablets will require integration with compaction
groups. So this patch introduces a way for streaming to take a storage
snapshot of a given tablet using its token range. Memtable is flushed
first, so all data of a tablet can be streamed through its sstables.
The interface is compaction group / tablet agnostic, but user can
easily pick data from a single tablet by using the range in tablet
metadata for a given tablet.
E.g.:
auto erm = table.get_effective_replication_map();
auto& tm = erm->get_token_metadata();
auto tablet_map = tm.tablets().get_tablet_map(table.schema()->id());
for (auto tid : tablet_map.tablet_ids()) {
auto tr = tmap.get_token_range(tid);
auto ssts = co_await table.take_storage_snapshot(tr);
...
}
Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
Closes#15128
a22f74df00