Great info about the Summary.db files, thanks Tyler. On Tue, Feb 23, 2016 at 2:27 PM, Tyler Hobbs <[email protected]> wrote:
> > On Tue, Feb 23, 2016 at 12:36 PM, Robert Coli <[email protected]> > wrote: > >> [1] In some very new versions of Cassandra, this may not be safe to do >> with certain meta information files which are sadly no longer immutable. > > > I presume you're referring to the index summary (i.e Summary.db files). > These just contain a sampling of the (immutable) Index.db files, and are > safe to hardlink in the way that you've described. The sampling level of > the summary (which is what can change over time) is serialized at the start > of the Summary.db file. > > If you're truly paranoid, you can skip the Summary.db files and they'll be > rebuilt on startup. > > -- > Tyler Hobbs > DataStax <http://datastax.com/> >
