Abstract: The various embodiments are directed towards enabling access to snapshotted versions of files in a distributed file system. The distributed file system may receive a file system operation request that includes at least an entry-ID and a snapshot-ID. File system operation requests may include operations such as reads, writes, moves, or the like. Directory entries that match the entry-ID and the snapshot-ID may be looked up and retrieved from the distributed file system. The retrieved directory entries may also be arranged to include a generation-ID. In the directory entry matching the snapshot-ID, if the generation-ID and the snapshot-ID are different, another directory entry may be looked up from the distributed file system using the entry-ID and the generation-ID. Then the initially requested file system operation may be performed on the retrieved directory entry.

Abstract: A valve assembly for a container filling machine. The filling machine includes a rotating turret or carrier having a series of platforms that support individual containers, such as cans, to be filled. Mounted above each platform is a valve assembly which controls the fluid flow to the can. Each valve assembly includes a valve body and a rotatable disc, and the body and the disc have mating surfaces, each containing ports that can be moved into registry as the disc is rotated with respect to the body to effect fluid flow. To rotate the disc during the cycle of operation, a single arm is attached to the disc and carries a follower which is adapted to engage a series of fixed cam tracks as the carrier rotates to move the arm and rotate the disc to obtain the desired registry of the ports.