Avoiding mapred.child.env modification at runtime on HDP so that R can establish connection to hiveserver2 using RHive - r

Question

I'm trying to get R's RHive package to communicate nicely with hiveserver2.
I receive an error while trying to connect into hiveserver2 using:
>rhive.connect(host="localhost",port=10000, hiveServer2=TRUE, user="root", password="hadoop")
The output on the initial run:
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/hdp/2.2.0.0-2041/hadoop/client/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/hdp/2.2.0.0-2041/hadoop/client/slf4j-log4j12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/hdp/2.2.0.0-2041/hadoop/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/hdp/2.2.0.0-2041/hive/lib/hive-jdbc-0.14.0.2.2.0.0-2041-standalone.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/hdp/2.2.0.0-2041/hive/lib/hive-jdbc.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
15/03/19 07:08:22 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
15/03/19 07:08:23 WARN shortcircuit.DomainSocketFactory: The short-circuit local reads feature cannot be used because libhadoop cannot be loaded.
15/03/19 07:08:24 INFO jdbc.Utils: Supplied authorities: localhost:10000
15/03/19 07:08:24 INFO jdbc.Utils: Resolved authority: localhost:10000
15/03/19 07:08:24 INFO jdbc.HiveConnection: Will try to open client transport with JDBC Uri: jdbc:hive2://localhost:10000/default
This leads to the error:
Error: org.apache.hive.service.cli.HiveSQLException: Error while processing statement: Cannot modify mapred.child.env at runtime. It is not in list of params that are allowed to be modified at runtime
On subsequent runs of the same command the output reduces to:
15/03/19 07:16:24 INFO jdbc.Utils: Supplied authorities: localhost:10000
15/03/19 07:16:24 INFO jdbc.Utils: Resolved authority: localhost:10000
15/03/19 07:16:24 INFO jdbc.HiveConnection: Will try to open client transport with JDBC Uri: jdbc:hive2://localhost:10000/default
Error: org.apache.hive.service.cli.HiveSQLException: Error while processing statement: Cannot modify mapred.child.env at runtime. It is not in list of params that are allowed to be modified at runtime
This indicates to me that I may have insufficient permissions somewhere... However, I'm running this using root. So, I'm unsure of what permissions I'm missing...
I've installed RHive using the installation guidelines via README.
NOTE: The same error occurs if I use the CRAN version of the package.
I'm currently using Hortonworks Data Platform 2.2 (HDP 2.2)'s virtual box image. As a result, hadoop and hiveserver2 are already installed. I've installed R version 3.1.2.
The following is how I am installing RHive:
# Set up paths for HIVE_HOME, HADOOP_HOME, and HADOOP_CONF
export HIVE_HOME=/usr/hdp/2.2.0.0-2041/hive
export HADOOP_HOME=/usr/hdp/2.2.0.0-2041/hadoop
export HADOOP_CONF_DIR=/etc/hadoop/conf
# R Location via RHOME
R_HOME=/usr/lib64/R
# Place R_HOME into hadoop config location
sudo sh -c "echo \"R_HOME='$R_HOME'\" >> $HADOOP_HOME/conf/hadoop-env.sh"
# Add remote enable to Rserve config.
sudo sh -c "echo 'remote enable' >> /etc/Rserv.conf"
# Launch the daemon
R CMD Rserve
# Confirm launch
netstat -nltp
# Install ant to build java files
sudo yum -y install ant
# Install package dependencies
sudo R --no-save << EOF
install.packages( c('rJava','Rserve','RUnit'), repos='http://cran.us.r-project.org', INSTALL_opts=c('--byte-compile') )
EOF
# Install RHive package
git clone https://github.com/nexr/RHive.git
cd RHive
ant build
sudo R CMD INSTALL RHive
To check either open R and use the statements between EOF or just run the command directly from shell:
sudo R --no-save << EOF
Sys.setenv(HIVE_HOME="/usr/hdp/2.2.0.0-2041/hive")
Sys.setenv(HADOOP_HOME="/usr/hdp/2.2.0.0-2041/hadoop")
Sys.setenv(HADOOP_CONF_DIR="/etc/hadoop/conf")
library(RHive)
rhive.connect(host="localhost",port=10000, hiveServer2=TRUE, user="root", password="hadoop")
EOF

Answer 1

The answer is mentioned at this link.
Basically, you have to add a property "hive.security.authorization.sqlstd.confwhitelist.append" with value "mapred.child.env" in /etc/hive/conf/hive-site.xml
This solution worked for me, but I used Ambari UI to make this configuration change.