CODEWITHSUNDEEP
hadoopjava-8ubuntu-18.04hadoop3
CGG
CGG

Reputation: 273

Hadoop: bad execution compiling WordCount

I have installed Hadoop 3.1.1 and it is working. However, when I try to compile the WordCount example, I am receiving this error:

/usr/local/hadoop/libexec/hadoop-functions.sh: line 2358: HADOOP_COM.SUN.TOOLS.JAVAC.MAIN_USER: bad substitution
/usr/local/hadoop/libexec/hadoop-functions.sh: line 2453: HADOOP_COM.SUN.TOOLS.JAVAC.MAIN_OPTS: bad substitution

To compile, I used the next line:

hadoop com.sun.tools.javac.Main WordCount.java

I have the next variables in the .bashrc:

#Hadoop variables
export HADOOP_HOME=/usr/local/hadoop
export CONF=$HADOOP_HOME/etc/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin

#Java home
export JAVA_HOME=${JAVA_HOME}/java-8-oracle

#Path Java Tools
export HADOOP_CLASSPATH=$JAVA_HOME/lib/tools.jar

This time I am using Java 8 of Oracle because the apt-get of Ubuntu 18.08 LTS does not give me the option of installing the OpenJDK8. I have updated and upgraded Ubuntu.

I have read a lot of different post and possible solutions, but I cannot solve it.

Upvotes: 1

Views: 3024

Answers (1)

Ricolove
Ricolove

Reputation: 11

This is a viable solution I found in https://janzhou.org/2014/how-to-compile-hadoop.html

Set the HADOOP_CLASSPATH:

export HADOOP_CLASSPATH=$(bin/hadoop classpath)

Compile:

javac -classpath ${HADOOP_CLASSPATH} -d WordCount/ WordCount.java

Upvotes: 1

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