The revision number is a field that is necessary for Hypertable to work properly. We use it for MVCC <http://en.wikipedia.org/wiki/Multiversion_concurrency_control> purposes. However, if you don't supply a timestamp (e.g. auto-assign), then the timestamp and the revision number are the same and they occupy the same space. This goes for COUNTER columns as well as normal ones.
- Doug On Mon, Jun 16, 2014 at 4:24 AM, dorian i <[email protected]> wrote: > It's possible for the revision number to be supplied with inserts and >> queries. >> > Is there a roadmap(possible?) for specifying revision when inserting? > > Mainly to lower overhead on: > > 1. counter columns (what could go wrong on increments with the same > revision/timestamp?). While deletes can use future timestamps. > 2. normal columns where timestamp=revision > > -- > You received this message because you are subscribed to the Google Groups > "Hypertable Development" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/hypertable-dev. > For more options, visit https://groups.google.com/d/optout. > -- Doug Judd CEO, Hypertable Inc. -- You received this message because you are subscribed to the Google Groups "Hypertable Development" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hypertable-dev. For more options, visit https://groups.google.com/d/optout.
