We are currently using hadoop 0.20.203 on a 10 node cluster. We are considering upgrading to a newer version and I have two questions in this regard.
1) It seems 0.21 is unlikely to become a stable release anytime soon and we are weary of moving to an unstable release. Our primary concern is the data we have on our hdfs. I want to know if anyone has been using 0.21 in production and would like to hear about your experiences? Any advice on this front is appreciated.
2) Do we know when 0.23 is likely to become stable? There has been some discussion on mail #dev* about 0.23 becoming stable sometime soon. Is it going to happen by the end of this year?
* - http://search-hadoop.com/m/f623FA7bDK1/hadoop+next+stable+release+0.21&subj=0+21+stable+schedule+