question Re: Problem removing Spark 1.6 from my cluster in Archives of Support Questions (Read Only)

Problem removing Spark 1.6 from my cluster

JoaquinS — Fri, 16 Sep 2022 11:44:02 GMT

Hello,

I want to remove Spark 1.6 in order to Install Spark 2.1. But when I try to remove it with this command:

sudo yum remove spark-core spark-master spark-worker spark-history-server spark-python

source: https://www.cloudera.com/documentation/enterprise/5-8-x/topics/cdh_ig_cdh_comp_uninstall.html

The packages are not found.

What should I do in order to remove Spark 1.6 from my Cluester?.

Also, in a previousstep I deleted it from my services.

I'm using CDH 5.8.0.

Re: Problem removing Spark 1.6 from my cluster

JoaquinS — Fri, 09 Jun 2017 16:06:16 GMT

I forgot to mention that Spark 1.6 came with CDH 5.8. I don't know how CDH installed Spark.

Re: Problem removing Spark 1.6 from my cluster

saranvisa — Fri, 09 Jun 2017 17:57:18 GMT

@JoaquinS

To my knowledge, you don't need to remove spark 1.x in order to install spark 2.x

You can have both and CM will have separate services for spark (spark 1.x) and spark2 (spark 2.x).

Note: This is only for spark

Re: Problem removing Spark 1.6 from my cluster

saranvisa — Fri, 09 Jun 2017 18:01:43 GMT

@JoaquinS

Got the link now and it says "A Spark 1.6 service can co-exist on the same cluster as Spark 2."

https://www.cloudera.com/documentation/spark2/latest/topics/spark2_requirements.html

Re: Problem removing Spark 1.6 from my cluster

JoaquinS — Fri, 09 Jun 2017 20:52:55 GMT

@saranvisa Thanks, that worked.

Also, in order to point to the new Spark, I had to change some symbolic links and ENV variables.

export SPARK_DIST_CLASSPATH=$(hadoop classpath)
ln -sf /opt/cloudera/parcels/SPARK2-2.1.0.cloudera1-1.cdh5.7.0.p0.120904/lib/spark2/bin/spark-shell /etc/alternatives/spark-shell
export SPARK_HOME=/opt/cloudera/parcels/SPARK2-2.1.0.cloudera1-1.cdh5.7.0.p0.120904/lib/spark2

Re: Problem removing Spark 1.6 from my cluster

SiddCanGo — Thu, 10 Aug 2017 09:40:01 GMT

Where i have to set environment variables? Did i have to change in master or spark services running in slave machine's?

Please help on this!!!

Re: Problem removing Spark 1.6 from my cluster

JoaquinS — Thu, 10 Aug 2017 15:20:18 GMT

If you want to use spark2-shell and spark2-submit, you don't have to set those ENV variables. I set it because I wanted to point the current spark-shell/submit to spark2.

This should be done in all the nodes that you want to use the shell and/or the submit.

I forgot to add the changes that I made for spark-sumbit.

In these files:

/opt/cloudera/parcels/CDH-5.8.0-1.cdh5.8.0.p0.42/bin/spark-submit
/opt/cloudera/parcels/CDH-5.8.0-1.cdh5.8.0.p0.42/lib/spark/bin/spark-submit

Add this ENV var:

SPARK_HOME=/opt/cloudera/parcels/SPARK2-2.1.0.cloudera1-1.cdh5.7.0.p0.120904/lib/spark2