Nano /etc/default/cloudera-scm-server nano /etc/default/hadoop nano /etc/default/hadoop-0.20-mapreduce nano /etc/default/hadoop-hdfs-datanode nano /etc/default/hadoop-hdfs-journalnode nano /etc/default/hadoop-hdfs-namenode nano /etc/default/hadoop-hdfs-secondarynamenode nano /etc/default/hadoop-yarn-nodemanager nano /etc/default/spark nano /etc/default/impala nano /etc/default/zookeeper nano /etc/default/solr 3.

Add the line ` export JAVA_HOME='/usr/lib/jvm/jre-1.8.0-openjdk.x86_64 '` to the bottom of each of the following files:.

Edit the /etc/bashrc file and set the JAVA_HOME to java8 so the file resembles:Įxport JAVA_HOME='/usr/lib/jvm/jre-1.8.0-openjdk.x86_64' export JRE_HOME='$' export ANT_HOME='/usr/local/apache-ant/apache-ant-1.9.2' export M2_HOME='/usr/local/apache-maven/apache-maven-3.0.4' export PATH='/usr/local/firefox:/sbin:$JAVA_HOME/bin:$ANT_HOME/bin:$M2_HOME/bin:$PATH'.

Service cloudera-scm-agent stop service cloudera-scm-server stop 2.

Stop the Cloudera SCM Services from the command line.

Service hadoop-hdfs-datanode stop service hadoop-hdfs-journalnode stop service hadoop-hdfs-namenode stop service hadoop-hdfs-secondarynamenode stop service hadoop-httpfs stop service hadoop-mapreduce-historyserver stop service hadoop-yarn-nodemanager stop service hadoop-yarn-proxyserver stop service hadoop-yarn-resourcemanager stop service hbase-master stop service hbase-regionserver stop service hbase-rest stop service hbase-solr-indexer stop service hbase-thrift stop service hive-metastore stop service hive-server2 stop service impala-catalog stop service impala-server stop service impala-state-store stop service oozie stop service solr-server stop service spark-history-server stop service sqoop2-server stop service sqoop-metastore stop service zookeeper-server stop The reason you might want to do this is so that you can run Spark jobs using the Java8 libraries and features (like lambda operations, etc). You can also read more use cases about how to upgrade to Java 8 here. The purpose of this blog is to describe how to set Java8 as the version of Java to use in the Cloudera Quickstart VM and as the version of Java to use in Hadoop.

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