This patch adds the functionality of takeMultipleColumnFamilySnapshot to
StorageService.
It follow origin logic of first check that all keyspaces and column
families exists and has no snapshot with that name and then run snapshot
on each of the combinations.
Two methods where added to simplify the implementation, but that can be
reused. One to get a map from keyspace to column family and one with the
current snapshots.
Fixesscylladb/scylla#1133
Signed-off-by: Amnon Heiman <amnon@scylladb.com>
Message-Id: <1461659678-22030-1-git-send-email-amnon@scylladb.com>
c63ec3e96b