Hi, On 18.12.18, 01:55, "ems eril" <emsro...@gmail.com> wrote: > 1) Is this a blocking call ? And any plans for callback or java future > support?
Yes, Clusterable.isVisible() is a blocking call and you can give it a timeout. There are no plans right now to add an async variant of this feature. > 2) Is there any JCR level API we can use as its currently very low level ? No, there is no JCR/Jackrabbit API equivalent for this feature. > If not is Sling have any plans to use this ? You will have to ask this on the Sling list. > 3) Any reason why documentstore needs to implement revision snapshotting ? > Why can we leverage existing documentstore database capabilities such as > mongo https://docs.mongodb.com/manual/core/wiredtiger/ as most support MVCC In Oak we have the requirement to keep a snapshot of the repository for a longer period of time and not just for concurrency control. E.g. you can create a checkpoint with a lifetime of several days or even months [0]. Regards Marcel [0] https://jackrabbit.apache.org/oak/docs/apidocs/org/apache/jackrabbit/oak/spi/state/NodeStore.html#checkpoint-long-java.util.Map-
