Can some one help me resolve this warning It says Unable to load Native-Hadoop library to your platform

Question

I am using CentOS and am trying to configure Hadoop Server and when I tried to run the start-dfs.sh command, I am receiving this warning as follows.

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

My current Hadoop version is Hadoop 2.2.0.

However, the contents of /native/ directory on Hadoop 2.x appear to be different so I am not sure what to do.

I have also made some changes in Hadoop-env.sh as follows:

export HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=/usr/local/hadoop/lib/"
export HADOOP_COMMON_LIB_NATIVE_DIR="/usr/local/hadoop/lib/native/"

But this hardly helped. Let me know if you can help me out on this one.

Thank you

Answer 1

I understood the issue. I have faced a similar one. I used this solution which worked out pretty well.

Append the word native to your HADOOP_OPTS like this:

export HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=$HADOOP_HOME/lib/native"