Hi Jinzhong Thank you for initiating this FLIP.
I have just some minor question: 1. If we choice Option-3 for ForSt , how would we handle Manifest File ? Should we take snapshot of the Manifest during the synchronization phase? Otherwise, may the Manifest and MetaInfo information be inconsistent during recovery? 2. For the Restore Operation , we need Fast Duplicate Checkpoint Files to Working Dir . However, many distributed storage systems do not support the ability of Fast Duplicate (such as HDFS). But ForSt has the ability to directly read and write remote files. Can we not copy or Fast duplicate these files, but instand of directly reuse and. reference these remote files? I think this can reduce file download time and may be more useful for most users who use HDFS (do not support Fast Duplicate)? -- Best, Yue
