cassandra: Make directory_ls fetch contents in batch instead of one-by-one
This should make it run up to 100 times faster, even on average directories.
Depends on !714 (closed).
Migrated from D6229 (view on Phabricator)
This should make it run up to 100 times faster, even on average directories.
Depends on !714 (closed).
Migrated from D6229 (view on Phabricator)