If you want to learn more about HA in HDFS, here are some slides from
a talk that Aaron T. Meyers and Suresh Srinivas gave:
branch-2 and later contain HDFS HA.
On Sun, Nov 4, 2012 at 1:06 AM, lei liu <[EMAIL PROTECTED]> wrote:
> I am using hadoop0.20.2, now I want to use HDFS HA function. I research
> AvatarNode. I find if the StandbyNN do checkpoint fail, when next time the
> StandbyNN do checkpoint, the same edits file is loaded again. Can same
> edits file be loaded more than once in hadoop0.20.2?
> if not, what is the harm?