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:

Thanks all!

-Andrew + Analytics team