On Thu, Apr 22, 2010 at 6:50 AM, Michael Segel <michael_se...@hotmail.com> wrote: > > I guess the questions to ask are: > > - How does HBase handle row level locking? > -Concurrent reads/fetches of the same row? >
Hey Michael. Here's a spec for how we are *meant* to do the above starting with 0.20.5 over in https://issues.apache.org/jira/browse/HBASE-2294. I committed the last patch therein to the hbase 0.20 trunk. You can view its current state here: http://people.apache.org/~stack/acid-semantics.pdf Let us know if unclear or we can improve. > I wish I knew more about the internals of HBase, but there are only so many > hours in the day and my wife forces me to work so I can keep up with her > spending. ;-) (And if any of you happen to ever meet her, please don't bring > this up, she'll kill me. :-D ) > Smile. (Met your cohort at hackathon Monday. Showed me cool looking processing pipeline diagrams. I was impressed). St.Ack
