Hello oak devs,
I’ve been referring to the documentation here:
https://jackrabbit.apache.org/oak/docs/plugins/blobstore.html#check-shared-datastore-gc
but have not been able to find the answers to my questions about the
repositoryid and how it is used in the case of a shared datastore.
Each repository has its own ID which is set at creation and this is recorded in
the datastore (slightly different location if file datastore or S3 or Azure).
This allows for the garbage collection on the shared datastore with the mark
and sweep methods.
If I’m adding a new repository to the shared datastore, this is no problem
because the new repo will have a new repository id. The potential problem I
see is when cloning a repo (for example when creating a new Publish instance to
deal with added load on a website). When cloning an AEM publish instance, the
repositoryid is also cloned.
QUESTIONS
* Is it OK for two publish instances to share the same repositoryid?
* I would think this is not a good idea because, even if each publish
instance should be identical, each repo could create specific binaries.
* With two AEM 6.4 (oak 1.8.3) publish instances using the same
repositoryid I have not run into any issues so far but have only done limited
tests...
* How to ‘reset’ a repositoryid?
* Or, another option would be to clone the repo but get a new repository
ID. In other words, how to clone a repository without copying the
repositoryid, so that when it connects to a shared datastore it is registered
correctly with a unique repositoryid?
Thank you,
Stephan Matschinsky
