Popular lifehacks

How do I run a Scala program in terminal?

How do I run a Scala program in terminal?

Another way to execute Scala code is to type it into a text file and save it with a name ending with “. scala”. We can then execute that code by typing “scala filename”.

How do I run a Spark Scala program in Windows?

Install Apache Spark on Windows

  1. Step 1: Install Java 8. Apache Spark requires Java 8.
  2. Step 2: Install Python.
  3. Step 3: Download Apache Spark.
  4. Step 4: Verify Spark Software File.
  5. Step 5: Install Apache Spark.
  6. Step 6: Add winutils.exe File.
  7. Step 7: Configure Environment Variables.
  8. Step 8: Launch Spark.

How do I run a Scala code in EMR?

Using the Scala shell

  1. Log in to the master node using SSH as described in Connect to the master node using SSH.
  2. Type the following to start a shell: In Amazon EMR version 5.5. 0 and later, you can use the following command to start a Yarn cluster for the Scala Shell with one TaskManager. \% flink-scala-shell yarn 1.
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Does Scala support Spark?

Scala and Java users can include Spark in their projects using its Maven coordinates and Python users can install Spark from PyPI.

Where do I enter Scala code?

To write scala program you need to install scala on your machine. You must have latest jdk installed on your machine because scala compiler creates . class file which is a byte code. Scala interpreter executes this byte code by using jvm (Java Virtual Machine).

How do I run a Scala file?

Run Scala applications

  1. Create or import a Scala project as you would normally create or import any other project in IntelliJ IDEA.
  2. Open your application in the editor.
  3. Press Shift+F10 to execute the application. Alternatively, in the left gutter of the editor, click the. icon and select Run ‘name’.

How do I set up Sparkhome?

  1. 3 Answers. You should install and set the SPARK_HOME variable, in unix terminal run the following code to set the variable: export SPARK_HOME=”/path/to/spark”
  2. Specify SPARK_HOME and JAVA_HOME. As we have seen in the above function, for Windows we need to specifiy the locations.
  3. Configure SparkContext.
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Can Apache Spark run on Windows?

To run Apache Spark on windows, you need winutils.exe as it uses POSIX like file access operations in windows using windows API. winutils.exe enables Spark to use Windows-specific services including running shell commands on a windows environment.

How do I run a Spark application on EMR?

Now that our S3 bucket is created, we will upload the Spark application jar and an input file on which we will apply the wordcount….Create an Amazon EMR cluster & Submit the Spark Job

  1. Open the Amazon EMR console.
  2. On the right left corner, change the region on which you want to deploy the cluster.
  3. Choose Create cluster.

Which Scala is compatible with Spark?

Spark runs on Java 8+, Python 2.7+/3.4+ and R 3.1+. For the Scala API, Spark 2.4. 0 uses Scala 2.11. You will need to use a compatible Scala version (2.11.