Setting up your first Hadoop cluster

Running Dockerized Hadoop

To run hadoop run the command shown below, in the boot2docker terminal window. This will download the docker image for Hadoop and run it, by default it runs in the single-node pseudo-cluster mode which is what we want anyway. For a description of available the parameters to docker take a look at the documentation. The parameters we have used are as follows:

• -i: Tells docker to run a container with an image.
• -t sequenceiq/hadoop-docker: Tells docker which image to use, i.e. sequenceiq/hadoop-docker. The source code for this image is available in github here.
• -p 50070:50070 Tells docker that the 50070 network port inside the container should be mapped to the 50070 port of the host machine.
• /etc/bootstrap.sh -bash are the commands passed to the container needed to run the hadoop inside the container.

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