FYI that this is happening today. Users may see slowness and paused jobs.
We will send a note when upgrade is complete.
On Thu, Apr 5, 2018 at 1:22 PM, Andrew Otto <o...@wikimedia.org> wrote:
> Hi all!
> I just upgraded spark2 across the cluster to Spark 2.3.0
> <https://spark.apache.org/releases/spark-release-2-3-0.html>. If you are
> using the pyspark2*, spark2-*, etc. executables, you will now be using
> Spark 2.3.0.
> We are moving towards making Spark 2 the default Spark for all Analytics
> production jobs. We don’t have a deprecation plan for Spark 1 yet, so you
> should be able to continue using Spark 1 for the time being. However, in
> order to support large yarn Spark 2 jobs, we need to upgrade the default
> Yarn Spark Shuffle Service to Spark 2. This means that large Spark 1 jobs
> may no longer work properly. We don’t know of any large productionized
> Spark 1 jobs other than the ones the Analytics team manages, but if you
> have any that you are worried about, please let us know ASAP.
> -Andrew & Analytics Engineering
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