On Nov 22, 2011, at 12:05 PM, Niranjan Balasubramanian wrote: > Hello > > 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? >
Currently hadoop-0.23 has undergone significant feature, scale and performance testing at ~500 nodes, but there is some more to go. We anticipate deploying to a few alpha clusters of sizes between 1000-2000 nodes in Jan in secure environments (is security important to you?). I'd say for your scale late Q1, 2012 should a good time frame. Arun
