Spark - Jobs

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Job in Spark.

A job is a unit of task for an application.

A job consists of tasks that will be executed by the workers in parallel where possible.

A job is triggered by an action function.

Spark Jobs

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Spark Program
Spark - Application

An application is an instance of a driver created via the initialization of a spark context (RDD) or a spark session (Data Set) This instance can be created via: a whole script (called batch mode)...
Card Puncher Data Processing
Spark - History Server

job history server history server It lists the following jobs type: incomplete completed attempts. URL web interface: by default For azure hdinsight: ...
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Spark - Livy (Rest API )

Livy is an open source REST interface for interacting with Spark from anywhere. It supports executing: snippets of code or programs in a Spark Context that runs locally or in YARN. It's used...
Card Puncher Data Processing
Spark - Web UI (Driver UI)

Each driver program has a web UI, typically on port 4040, that displays information : running tasks, executors, and storage usage. The Spark UI will tell you which DataFrames and what percentages...
Spark Query Plan Generation
Spark Engine - Action Function

Actions are function that trigger the computation of all previous transformations in order to get back an actual result. An action is composed of one or more jobs Spark actions execute the specified...

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