no , the memtable is a concurrentskiplistmap
insertion can happen in parallel On Jul 7, 2011 9:24 AM, "Jeffrey Kesselman" <jef...@gmail.com> wrote: > This has me more confused. > > Does this mean that ALL rows on a given node are only updated sequentially, > never in parallel? > > On Thu, Jul 7, 2011 at 3:21 PM, Yang <teddyyyy...@gmail.com> wrote: > >> just to add onto what jonathan said >> >> the columns are immutable . if u overwrite/ reconcile a new obj is >> created and shoved into the memtable >> >> there is a shared lock for all writes though which guard against an >> exclusive lock on memtable switching/flushing >> On Jul 7, 2011 7:51 AM, "A J" <s5a...@gmail.com> wrote: >> > Does a write lock: >> > 1. Just the columns in question for the specific row in question ? >> > 2. The full row in question ? >> > 3. The full CF ? >> > >> > I doubt read does any locks. >> > >> > Thanks. >> > > > > -- > It's always darkest just before you are eaten by a grue.
