Hadoop “Unable to load native-hadoop library for your platform” warning

Question

I\'m currently configuring hadoop on a server running CentOs. When I run start-dfs.sh or stop-dfs.sh, I get the following error:

Answer 1

For those on OSX with Hadoop installed via Homebrew, follow these steps replacing the path and Hadoop version where appropriate

wget http://www.eu.apache.org/dist/hadoop/common/hadoop-2.7.1/hadoop-2.7.1-src.tar.gz
tar xvf hadoop-2.7.1-src.tar.gz
cd hadoop-2.7.1-src
mvn package -Pdist,native -DskipTests -Dtar
mv lib /usr/local/Cellar/hadoop/2.7.1/

then update hadoop-env.sh with

export HADOOP_OPTS="$HADOOP_OPTS -Djava.net.preferIPv4Stack=true -Djava.security.krb5.realm= -Djava.security.krb5.kdc= -Djava.library.path=/usr/local/Cellar/hadoop/2.7.1/lib/native"