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You're reading from Apache Spark 2.x for Java Developers

Product typeBook

Published inJul 2017

Reading LevelIntermediate

PublisherPackt

ISBN-139781787126497

Edition1st Edition

Languages

Java

Tools

Apache Spark

Concepts

Data Streaming

Authors (2):

Sourav Gulati

Sumit Kumar

View More author details

Spark Driver Web UI

This section will provide some important aspects of the Spark driver's UI. We will see the statistics of the jobs we executed using Spark shell on Spark UI.

As described in the Getting started with Apache Spark section, Spark driver's UI runs at http://localhost:4040/ (unless you make any changes to default settings).

When you start Spark shell, Spark driver's UI will look as follows:

SparkContext is an entry point to every Spark application. Every Spark job is launched with a SparkContext and can consist of only one SparkContext.

Spark shell, being a Spark application starts with SparkContext and every SparkContext launches its own web UI. The default port is 4040. Spark UI can be enabled/disabled or can be launched on a separate port using the following properties:

Property	Default value
`spark.ui.enabled`	`True`
`spark.ui.port`	`4040`

For example, Spark shell application with Spark UI running on 5050 port can be launched as:

spark-shell --confspark.ui.port=5050

If multiple Spark applications...

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Apache Spark 2.x for Java Developers

Published in: Jul 2017Publisher: PacktISBN-13: 9781787126497

Authors (2)

Sourav Gulati

Sourav Gulati is associated with software industry for more than 7 years. He started his career with Unix/Linux and Java and then moved towards big data and NoSQL World. He has worked on various big data projects. He has recently started a technical blog called Technical Learning as well. Apart from IT world, he loves to read about mythology.
Read more about Sourav Gulati

Sumit Kumar

Sumit Kumar is a developer with industry insights in telecom and banking. At different junctures, he has worked as a Java and SQL developer, but it is shell scripting that he finds both challenging and satisfying at the same time. Currently, he delivers big data projects focused on batch/near-real-time analytics and the distributed indexed querying system. Besides IT, he takes a keen interest in human and ecological issues.
Read more about Sumit Kumar

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You're reading from Apache Spark 2.x for Java Developers

Spark Driver Web UI

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