Optional: Spark Manual Upgrade Procedure

	Important
	Hortonworks strongly recommends that all users running HDP 2.3.4 upgrade to HDP 2.3.4.7.

(Optional) Upgrade Spark from 1.4.1 to 1.5.2. As root:

Stop Spark 1.4.1: su - spark -c "/usr/hdp/current/spark-client/sbin/stop-history-server.sh".
Remove Spark 1.4.1: yum erase "spark*".
Add the node where you want Spark 1.5.2 History Server to run:
1. su - root
2. wget -nv http://s3.amazonaws.com/dev.hortonworks.com/HDP/centos6/2.x/BUILDS/2.3.4.0-3485/hdpbn.repo -O /etc/yum.repos.d/Spark141TP.repo
3. yum install spark_2_3_4_0_3485-master -y
4. To use Python: yum install spark_2_3_4_0_3485-python
5. conf-select create-conf-dir --package spark --stack-version 2.3.4.0-3485 --conf-version 0
6. cp /etc/spark/2.3.4.0-3485/0/* /etc/spark/2.3.4.0-3485/0/
7. conf-select set-conf-dir --package spark --stack-version 2.3.4.0-3485 --conf-version 0
8. hdp-select set spark-client 2.3.4.0-3485
9. hdp-select set spark-historyserver 2.3.4.0-3485
Validate the Spark installation. As user spark, run SparkPI example:
1. su - spark -c "cd /usr/hdp/current/spark-client"
2. ./bin/spark-submit --class org.apache.spark.examples.SparkPi --master yarn-client --num-executors 3 --driver-memory 512m --executor-memory 512m --executor-cores 1 lib/spark-examples*.jar 10
Restart Spark on YARN in either yarn-cluster mode or yarn-client mode:
- yarn-cluster mode: ./usr/hdp/current/spark-client/bin/spark-submit --class path.to.your.Class --master yarn-cluster [options] <app jar> [app options]
- yarn-client mode: ./usr/hdp/current/spark-client/bin/spark-shell --master yarn-client