Hadoop Chart

This chart is modified from stable/hadoop and mgit-at/helm-hadoop-3 and has been updated to:

• run use multi-architecture Docker image and
• use the currently latest version of Hadoop.

This chart is primarily intended to be used for YARN and MapReduce job execution where HDFS is just used as a means to transport small artifacts within the framework and not for a distributed filesystem. Data should be read from cloud based datastores such as Google Cloud Storage, S3 or Swift.

Chart Details

Installing the Chart

To install the chart with the release name hadoop:

helm helm repo add pfisterer-hadoop https://pfisterer.github.io/apache-hadoop-helm/
helm install --name hadoop pfisterer-hadoop/hadoop

Configuration

The following table lists the configurable parameters of the Hadoop chart and their default values.

Parameter	Description	Default
image.repository	Hadoop image	farberg/apache-hadoop
image.tag	Hadoop image tag	3.3.2
imagee.pullPolicy	Pull policy for the images	IfNotPresent
hadoopVersion	Version of hadoop libraries being used	3.3.2
antiAffinity	Pod antiaffinity, hard or soft	hard
hdfs.nameNode.pdbMinAvailable	PDB for HDFS NameNode	1
hdfs.nameNode.resources	resources for the HDFS NameNode	requests:memory=256Mi,cpu=10m,limits:memory=2048Mi,cpu=1000m
hdfs.dataNode.replicas	Number of HDFS DataNode replicas	1
hdfs.dataNode.pdbMinAvailable	PDB for HDFS DataNode	1
hdfs.dataNode.resources	resources for the HDFS DataNode	requests:memory=256Mi,cpu=10m,limits:memory=2048Mi,cpu=1000m
hdfs.webhdfs.enabled	Enable WebHDFS REST API	true
yarn.resourceManager.pdbMinAvailable	PDB for the YARN ResourceManager	1
yarn.resourceManager.resources	resources for the YARN ResourceManager	requests:memory=256Mi,cpu=10m,limits:memory=2048Mi,cpu=1000m
yarn.nodeManager.pdbMinAvailable	PDB for the YARN NodeManager	1
yarn.nodeManager.replicas	Number of YARN NodeManager replicas	1
yarn.nodeManager.parallelCreate	Create all nodeManager statefulset pods in parallel (K8S 1.7+)	false
yarn.nodeManager.resources	Resource limits and requests for YARN NodeManager pods	requests:memory=2048Mi,cpu=1000m,limits:memory=2048Mi,cpu=1000m
persistence.nameNode.enabled	Enable/disable persistent volume	false
persistence.nameNode.storageClass	Name of the StorageClass to use per your volume provider	-
persistence.nameNode.accessMode	Access mode for the volume	ReadWriteOnce
persistence.nameNode.size	Size of the volume	50Gi
persistence.dataNode.enabled	Enable/disable persistent volume	false
persistence.dataNode.storageClass	Name of the StorageClass to use per your volume provider	-
persistence.dataNode.accessMode	Access mode for the volume	ReadWriteOnce
persistence.dataNode.size	Size of the volume	200Gi

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Customized Hadoop Base Docker Image

This image is modified from comcast/kube-yarn and mgit-at/helm-hadoop-3. Currently, native libraries are not been included.

Build and Push the Docker Image

# Set version
HADOOP_VERSION=3.3.2

# Build
docker buildx build --push --platform "linux/arm64,linux/amd64" -t farberg/apache-hadoop:latest -t farberg/apache-hadoop:$HADOOP_VERSION .

Testing with minikube

If you are running locally with minikube and want to try your images without pushing them to a registry, build the images on the minikube VM first:

eval $(minikube docker-env)
# use the build command from above

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Development

Help is always appreciated. Please create pull requests.

Open Issues

• Include native libraries
• List of ports needs to be updated (cf. https://www.oreilly.com/library/view/big-data-analytics/9781788628846/5c5821cc-4a3d-498a-a3eb-23256cd79c8b.xhtml)

Upload a new version of the chart

helm lint
helm package .
mv hadoop*.tgz docs/
helm repo index docs/ --url https://pfisterer.github.io/apache-hadoop-helm/
git add docs/
git commit -a -m "Updated helm repository"
git push origin master

Changes

Version 1.2.0

• Initial release of this chart
• Use multi-architecture base image
• Apache Hadoop 3.3.2