Probably those without suffix were created by previous Cassandra version (somewhere in 2.x series)
Best regards, Vladimir Yudovin, Winguzone - Hosted Cloud Cassandra on Azure and SoftLayer. Launch your cluster in minutes. ---- On Sun, 09 Oct 2016 01:58:07 -0400 Jason Kania <jason.ka...@ymail.com> wrote ---- Hello, In the data directory of my 3.0.9 installation, I have directories with both suffixes and without: periodicReading periodicReadingTemp-76eb7510096811e68a7421c8b9466352 The directories with and without suffixes are being updated and for those with a suffix, the suffix matches the output of this command: SELECT keyspace_name, table_name, id FROM system_schema.tables ; Can someone indicate why some would have suffixes and others not? Thanks, Jason