This is safe (and normal, and good) in all versions except those impacted by https://issues.apache.org/jira/browse/CASSANDRA-13004
So if you're on 2.1, 2.2, or 3.11 you're fine If you're on 3.0 between 3.0.0 and 3.0.13, you should upgrade first (to newest 3.0, probably 3.0.17) If you're on a version between 3.1 and 3.10, you should upgrade first (to newest 3.11, probably 3.11.3) - Jeff On Mon, Jul 30, 2018 at 10:16 PM, Visa <liguilin2...@gmail.com> wrote: > Hi all, > > I have one question about altering schema. If we only add columns, is it > ok to alter the schema while the writes to the table are happening at the > same time? We can control that the writes will not touch the new columns > until the schema change is done. Or better to stop the writes to that table > first. > > Thanks! > > Li > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org > >
