> Just one comment: If we do decide to keep append in, we should get it > to be actually stable and usable. In my opinion, this should > definitely happen before adding any new operations.
@Colin, append is currently stable and, of course, usable. Many people in different organizations have tested it in small and large scale. However, it is not yet in a stable release and so it is not yet heavy used. > I agree that the notion of an immutable file is useful since it lets the > system and tools optimize certain things. A xerox-parc file system in the > 80s had this feature that the system exploited. I would support adding the > notion of an immutable file to Hadoop. @Sanjay, I filed HDFS-3154. @Eli and others, it turns out that the discussion is very useful! Thanks. Nicholas
