The current state (after PR #26836) is that Alternator tables are
created by default using tablets. But due to issue #23838, Alternator
Streams cannot be enabled on a table that uses tablets... An attempt to
enable Streams on such a table results in a clear error:
"Streams not yet supported on a table using tablets (issue #23838).
If you want to use streams, create a table with vnodes by setting
the tag 'system:initial_tablets' set to 'none'."
But users should be able to learn this fact from the documentation -
not just retroactively from an error message. This is especially important
because a user might create and fill a table using tablets, and only get
this error when attempting to enable Streams on the existing table -
when it is too late to change anything.
So this patch adds a paragraph on this to compatibility.md, where
several other requirements of Alternator Streams are already mentioned.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Closesscylladb/scylladb#27000
80e5860a8c