Hi, I would say: 1 - Yes 2 - Yes (No major compaction needed, upgradesstables should do the job)
As always in case of doubt, as always, test it. ìn this case you can even do it using a local machine. Alain 2014-04-29 9:57 GMT+02:00 Katriel Traum <katr...@google.com>: > Hello, > > I am running mostly Cassandra 1.2 on my clusters, and wanted to migrate my > current Snappy compressed CF's to LZ4. > > Changing the schema is easy, my questions are: > 1. Will previous, Snappy compressed tables still be readable? > 2. Will upgradesstables convert my current CFs from Snappy to LZ4? Or do I > have to run major compaction? > > Thanks, > Katriel >