Hello,
I haven't quite understood the 2.1.1 documentation for sharding in one
aspect: it is described how to get the sharding document for one
database, how to edit it by e. g. adding a node to it and how to upload
it again. I've tried that and it works fine.
However, if I have the couch_per_user feature turned on, then there are
potentially thousands of databases. Suppose I add a new node to the
cluster, do I then need to follow this procedure for all databases in
order to balance data? Or is it enough to do it for one database? I
suppose an equivalent question would be: are the shards per database or
per cluster?
And, somewhat related: what about the _users, _global_changes and
_replicator databases? Do I need to edit their sharding document as
well, whenever I add or remove a cluster node?
I also find it interesting that the sharding document has no revisions
and instead relies on changelog entries.
many thanks in advance for any enlightenment,
Ulrich
