On Aug 19, 2011, at 12:39 AM, steven zhuang wrote:
> I updated my hadoop cluster from 0.20.2 to higher version
> 0.21.0 because of MAPREDUCE-1286, and now I have problem running a Hbase on
> I saw the 0.21.0 version is marked as "unstable, unsupported, does
> not include security".
> My question is that can I upgrade the cluster from 0.21.0 to a newer
> version say 0.20.203 or future version 0.22?
You won't be able to "side-grade" to 0.20.203/204. You should be able to upgrade to 0.22, 0.23, etc. Just be sure to process your edits file *prior* to upgrading. Otherwise it might explode.