When loading a schema asynchronously, we're leaving a strong
reference to the loaded schema in the entry's shared future. This
patch fixed this by storing a shared_promised, which is reset when the
schema is loaded.
Signed-off-by: Duarte Nunes <duarte@scylladb.com>
Message-Id: <20170220193654.17439-1-duarte@scylladb.com>
We need to track which schema version were synced with on current node
to avoid triggering the sync on every mutation. We need to sync before
mutating to be able to apply the incoming mutation using current
node's schema, possibly applying irreverdible transformations to it to
make it conform.
