On Thu, Feb 18, 2010 at 11:45 AM, Anthony Molinaro <antho...@alumni.caltech.edu> wrote: > +1 > (although I'm dreading the export from old sstables into new sstables, > any ideas on how fast that might be?, and I guess any idea if a tool > for doing this will be provided, or is it sstable2json and json2sstable?)
I'm not entirely sure of the plans here, but I think the idea is that any release of cassandra going forward is going to have to be able to deal with multiple versions of SSTable formats. I propose that when we change the format in a release we don't proactively rewrite the tables– just keep the old tables as-is and only write with the new format when we're already going to be writing a table (flushing or compacting). That way you can have a smooth upgrade if you want, or if you want to force the upgrade, you just trigger a major compaction. -ryan
