Hello, I'm thinking about implementing FileSystemHaServices - single leader, but persistent RunningJobRegistry, CheckpointIDCounter, CompletedCheckpointStore and JobGraphStore. I'm not sure do you need FileSystemBlobStore or VoidBlobStore is enough. Can't figure out, should BlobStore survive JobManager crash. I see that ZookeeperHaServices use FileSystemBlobStore, but not clear is to due to having multiple JobManagers (leader + follower) or necessity to preserve BLOBs on restart.
Thanks, Alexey
