Rightly said by Surbhi, it is not good to scale with mixed versions as debugging issues will be very difficult. Better to upgrade first and then scale.
Regards On Wed, Jun 24, 2020 at 11:20 AM Surbhi Gupta <surbhi.gupt...@gmail.com> wrote: > In case of any issue, it gets very difficult to debug when we have > multiple versions. > > On Tue, 23 Jun 2020 at 22:23, Jürgen Albersdorfer <jalbersdor...@gmail.com> > wrote: > >> Hi, I would say „It depends“ - as it always does. I have had a 21 Node >> Cluster running in Production in one DC with versions ranging from 3.11.1 >> to 3.11.6 without having had any single issue for over a year. I just >> upgraded all nodes to 3.11.6 for the sake of consistency. >> >> Von meinem iPhone gesendet >> >> Am 24.06.2020 um 02:56 schrieb Surbhi Gupta <surbhi.gupt...@gmail.com>: >> >> >> >> Hi , >> >> We have recently upgraded from 3.11.0 to 3.11.5 . There is a sstable >> format change from 3.11.4 . >> We also had to expand the cluster and we also discussed about expansion >> first and than upgrade. But finally we upgraded and than expanded. >> As per our experience what I could tell you is, it is not advisable to >> add new nodes on higher version. >> There are many bugs which got fixed from 3.11.3 to 3.11.6. >> >> Thanks >> Surbhi >> >> On Tue, Jun 23, 2020 at 5:04 PM Jai Bheemsen Rao Dhanwada < >> jaibheem...@gmail.com> wrote: >> >>> Hello, >>> >>> I am trying to upgrade from 3.11.3 to 3.11.6. >>> Can I add new nodes with the 3.11.6 version to the cluster running with >>> 3.11.3? >>> Also, I see the SSTable format changed from mc-* to md-*, does this >>> cause any issues? >>> >>>
