Re: performance penalty of add column in CQL3

Thank you! Boris > On Jul 25, 2017, at 7:44 PM, kurt greaves wrote: > > If by "offline" you mean with no reads going to the nodes, then yes that > would be a potentially safe time to do it, but it's still not advised. You > should avoid doing any ALTERs on versions of 3

Re: performance penalty of add column in CQL3

> On Jul 25, 2017, at 5:28 PM, Fay Hou [Storage Service] ­ <fay...@coupang.com> > wrote: > > are you aware this ticket? > https://issues.apache.org/jira/browse/CASSANDRA-13004 > <https://issues.apache.org/jira/browse/CASSANDRA-13004> > > On Tue, Jul 25, 201

performance penalty of add column in CQL3

Hi, Is "alter table t add column..." an expensive operation? For example, if it's something to be triggered at an admin level of an application (i.e. not frequently), is it ok? It won’t trigger rewriting all the data, right? My goal is not to have super wide tables, I know that’s not the