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From Yang <teddyyyy...@gmail.com>
Subject Re: What does a write lock ?
Date Thu, 07 Jul 2011 19:21:27 GMT
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" <s5alye@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.

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