Hiya, We’re ready to upgrade the Analytics Cluster to CDH 5.5. To do so, we need to schedule a maintenance period during which we can stop all Hadoop related services. This includes Hive, Oozie, Spark, etc. I’d like to plan this for Tuesday February 23rd starting at 14:00 UTC (09:00 US east coast, 06:00 US west coast). We’ve practiced this upgrade a few times in labs now, and I don’t foresee any issues. I predict that it will take us no more than 2 hours to finish, but just in case I’d like to reserve 8 hours for this. Please plan on not using the Analytics Cluster between 14:00 and 22:00 on February 23rd. I will update this thread again when we are about to start, and when we are finished. Progress is being tracked here: https://phabricator.wikimedia.org/T119646 What we get: - http://www.cloudera.com/documentation/enterprise/latest/topics/cdh_rn_new_i… - http://www.cloudera.com/documentation/enterprise/latest/topics/cdh_rn_fixed… Thanks all! -Andrew + Analytics team