The summary files are immutable, but can be replaced periodically. See https://issues.apache.org/jira/browse/CASSANDRA-5519 for more details.
The summary files aren't particularly important, they're primarily an optimization for startup time. On Thu, Oct 16, 2014 at 12:20 PM, Sean Bridges <sean.brid...@gmail.com> wrote: > Hello, > > I thought an sstable was immutable once written to disk. Before upgrading > from 1.2.18 to 2.0.10 we took a snapshot of our sstables. Now when I > compare the files in the snaphot dir and the original files, the Summary.db > files have a newer modified date, and the file sizes have changed. > > Thanks, > > Sean > -- Tyler Hobbs DataStax <http://datastax.com/>
