Hi, I don't think that composite columns have "parent columns". your point might be true for supercolumns .. but each composite column is probably independent..
On Wed, Jul 18, 2012 at 9:14 PM, Thomas Van de Velde <thomase...@gmail.com> wrote: > Hi there, > > I am trying to understand the expiration behavior of composite columns. > Assume I have two entries both have the same parent column name but each one > has a different ttl. Would expiration be applied at the parent column level > (taking into account ttls set per column under the parent and expiring all > of the child columns when the most recent ttl is met) or is each each child > entry expired independently? > > Would this be correct? > > A:B->ttl=5 > A:C->ttl=10 > > > t+5: Nothing gets expired (because A:C's expiration has not yet been > reached) > t+10: Both A:B and A:C are expired > > > Thanks, > Thomas
