#Apache Hadoop 2.6.0 Docker image
A few weeks ago we released an Apache Hadoop 2.3 Docker image (using CentOS 6.5 as the guest OS) - this quickly become the most popular Hadoop image in the Docker registry.
Following the success of our CentOS based Hadoop 2.3 Docker image, the feedback and feature requests we received aligned with the Hadoop release cycle, so we have released an Apache Hadoop 2.6.0 Docker image on Ubuntu 14.04 as well - same as the previous version, it's available as a trusted and automated build on the official Docker registry.
FYI: All the former Hadoop releases (2.3, 2.4.0, 2.4.1, 2.5.0, 2.5.1, 2.5.2, 2.6.0) are available in the GitHub branches or our Docker Registry - check the tags.
If you'd like to try directly from the Dockerfile you can build the image as:
docker build -t sequenceiq/hadoop-ubuntu:2.6.0 .
The image is also released as an official Docker image from Docker's automated build repository - you can always pull or refer the image when launching containers.
docker pull sequenceiq/hadoop-ubuntu:2.6.0
In order to use the Docker image you have just build or pulled use:
docker run -i -t sequenceiq/hadoop-ubuntu:2.6.0 /etc/bootstrap.sh -bash
You can run one of the stock examples:
cd $HADOOP_PREFIX
# run the mapreduce
bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar grep input output 'dfs[a-z.]+'
# check the output
bin/hdfs dfs -cat output/*
The Hadoop build process is no easy task - requires lots of libraries and their right version, protobuf, etc and takes some time - we have simplified all these, made the build and released a 64b version of Hadoop nativelibs on this Bintray repo. Enjoy.
As we have mentioned previously, a Docker file was created and released in the official Docker repository