mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-29 04:37:00 +00:00
4d7f55a29f
DateTieredCompactionStrategy (DTCS) has been un-recommended for a long time (users should use TimeWindowCompactionStrategy, TWCS, instead). This patch adds a new configuration option - restrict_dtcs - which can be used to restrict the ability to use DTCS in CREATE TABLE or ALTER TABLE statements. This is part of a "safe mode" effort to allow an installation to restrict operations which are un-recommended or dangerous. The new restrict_dtcs option has three values: "true", "false", and "warn": For the time being, "false" is still the default, and means DTCS is not restricted and can still be used freely. We can easily change this default in a followup patch. Setting a value of "true" means that DTCS *is* restricted - trying to create a a table or alter a table with it will fail with an error. Setting a value of "warn" will allow the create or alter operation, but will warn the user - both with a warning message which will immediately appear in cqlsh (for example), and with a log message. Fixes #8914. Signed-off-by: Nadav Har'El <nyh@scylladb.com> Message-Id: <20210624122411.435361-1-nyh@scylladb.com>