This repository contains a simple demo Spark application that translates words using Google's Translation API and running on Cloud Dataproc.

1. Record the project ID in an environment variable for later use:

   export PROJECT=$(gcloud info --format='value(config.project)')
   

2. Enable the translate and dataproc APIs:

   gcloud services enable translate.googleapis.com dataproc.googleapis.com
   

3. Compile the JAR (this may take a few minutes):

• Option 1: with Maven

  cd maven
  mvn package
  

• Option 2: with SBT

  cd sbt
  sbt assembly
  mv target/scala-2.11/translate-example-assembly-1.0.jar target/translate-example-1.0.jar
  

4. Create a bucket:

   gsutil mb gs://$PROJECT-bucket
   

5. Upload words.txt to the bucket:

   gsutil cp ../words.txt gs://$PROJECT-bucket
   

   The file words.txt contains the following:

   cat
   dog
   fish
   

6. Create a Cloud Dataproc cluster:

   gcloud dataproc clusters create demo-cluster \
   --zone=us-central1-a \
   --scopes=cloud-platform \
   --image-version=1.3
   

7. Submit the Spark job to translate the words to French:

   gcloud dataproc jobs submit spark \
   --cluster demo-cluster \
   --jar target/translate-example-1.0.jar \
   -- fr gs://$PROJECT-bucket words.txt translated-fr
   

8. Verify that the words have been translated:

   gsutil cat gs://$PROJECT-bucket/translated-fr/part-*
   

   The output is:

   chat
   chien
   poisson