Apache Spark is a unified analytics engine for large-scale data processing.It provides high-level APIs in Java, Scala, Python and R,and an optimized engine that supports general execution graphs.It also supports a rich set of higher-level tools including Spark SQL for SQL and structured data processing, MLlib for machine learning, GraphX for graph processing, and Structured Streaming for incremental computation and stream processing.

Security in Spark is OFF by default. This could mean you are vulnerable to attack by default.Please see Spark Security before downloading and running Spark.

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A Spark of Light by Jodi Picoult tells the story of a shooting that takes place at an abortion clinic in Mississippi. Caught up in the drama are ten people from whose perspectives Picoult tells the story. Central to the action are Hugh and Wren, father and daughter.

Get Spark from the downloads page of the project website. This documentation is for Spark version 3.0.0. Spark uses Hadoop’s client libraries for HDFS and YARN. Downloads are pre-packaged for a handful of popular Hadoop versions.Users can also download a “Hadoop free” binary and run Spark with any Hadoop versionby augmenting Spark’s classpath.Scala and Java users can include Spark in their projects using its Maven coordinates and Python users can install Spark from PyPI.

With A Spark of Light, the novelist wades fearlessly into the polarizing arguments surrounding women’s reproductive rights. Structured in reverse, the book covers a daylong hostage standoff at a Mississippi women’s health clinic. A Spark of Light. Ballantine Books, 2018. Picoult’s novel is told in reverse chronological order, starting at 5:00 p.m. And moving backward hour by hour to 8:00 a.m. The epilogue of the novel then takes place at 6:00 p.m. The novel begins with Wren being the only hostage left in the Center. Olive is dead and the rest have been released. Spark of Light Help Nerow bring back the light to his magical world and search for hidden fireflies that guide him through the darkness. Solve the mysteries of the stolen light together with Nerow on a magical journey to rescue the Sun-bug and restore the natural balance!

If you’d like to build Spark from source, visit Building Spark.

Spark runs on both Windows and UNIX-like systems (e.g. Linux, Mac OS), and it should run on any platform that runs a supported version of Java. This should include JVMs on x86_64 and ARM64. It’s easy to run locally on one machine — all you need is to have java installed on your system PATH, or the JAVA_HOME environment variable pointing to a Java installation.

Spark runs on Java 8/11, Scala 2.12, Python 2.7+/3.4+ and R 3.1+.Java 8 prior to version 8u92 support is deprecated as of Spark 3.0.0.Python 2 and Python 3 prior to version 3.6 support is deprecated as of Spark 3.0.0.R prior to version 3.4 support is deprecated as of Spark 3.0.0.For the Scala API, Spark 3.0.0uses Scala 2.12. You will need to use a compatible Scala version(2.12.x).

For Java 11, -Dio.netty.tryReflectionSetAccessible=true is required additionally for Apache Arrow library. This prevents java.lang.UnsupportedOperationException: sun.misc.Unsafe or java.nio.DirectByteBuffer.(long, int) not available when Apache Arrow uses Netty internally.

Spark comes with several sample programs. Scala, Java, Python and R examples are in theexamples/src/main directory. To run one of the Java or Scala sample programs, usebin/run-example <class> [params] in the top-level Spark directory. (Behind the scenes, thisinvokes the more generalspark-submit script forlaunching applications). For example,

A Spark Of Light

You can also run Spark interactively through a modified version of the Scala shell. This is agreat way to learn the framework.

The --master option specifies themaster URL for a distributed cluster, or local to runlocally with one thread, or local[N] to run locally with N threads. You should start by usinglocal for testing. For a full list of options, run Spark shell with the --help option.

Spark also provides a Python API. To run Spark interactively in a Python interpreter, usebin/pyspark:

Example applications are also provided in Python. For example,

Spark also provides an R API since 1.4 (only DataFrames APIs included).To run Spark interactively in an R interpreter, use bin/sparkR:

Example applications are also provided in R. For example,

The Spark cluster mode overview explains the key concepts in running on a cluster.Spark can run both by itself, or over several existing cluster managers. It currently provides severaloptions for deployment:

  • Standalone Deploy Mode: simplest way to deploy Spark on a private cluster

Programming Guides:

  • Quick Start: a quick introduction to the Spark API; start here!
  • RDD Programming Guide: overview of Spark basics - RDDs (core but old API), accumulators, and broadcast variables
  • Spark SQL, Datasets, and DataFrames: processing structured data with relational queries (newer API than RDDs)
  • Structured Streaming: processing structured data streams with relation queries (using Datasets and DataFrames, newer API than DStreams)
  • Spark Streaming: processing data streams using DStreams (old API)
  • MLlib: applying machine learning algorithms
  • GraphX: processing graphs

API Docs:

Deployment Guides:

  • Cluster Overview: overview of concepts and components when running on a cluster
  • Submitting Applications: packaging and deploying applications
  • Deployment modes:
    • Amazon EC2: scripts that let you launch a cluster on EC2 in about 5 minutes
    • Standalone Deploy Mode: launch a standalone cluster quickly without a third-party cluster manager
    • Mesos: deploy a private cluster using Apache Mesos
    • YARN: deploy Spark on top of Hadoop NextGen (YARN)
    • Kubernetes: deploy Spark on top of Kubernetes

Other Documents:

  • Configuration: customize Spark via its configuration system
  • Monitoring: track the behavior of your applications
  • Tuning Guide: best practices to optimize performance and memory use
  • Job Scheduling: scheduling resources across and within Spark applications
  • Security: Spark security support
  • Hardware Provisioning: recommendations for cluster hardware
  • Integration with other storage systems:
  • Migration Guide: Migration guides for Spark components
  • Building Spark: build Spark using the Maven system
  • Third Party Projects: related third party Spark projects

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External Resources:

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  • Spark Community resources, including local meetups
  • Mailing Lists: ask questions about Spark here
  • AMP Camps: a series of training camps at UC Berkeley that featured talks andexercises about Spark, Spark Streaming, Mesos, and more. Videos,slides and exercises areavailable online for free.
  • Code Examples: more are also available in the examples subfolder of Spark (Scala, Java, Python, R)