# beam **Repository Path**: maplecms/beam ## Basic Information - **Project Name**: beam - **Description**: Apache Beam是大数据的编程模型，定义了数据处理的编程范式和接口，它并不涉及具体的执行引擎的实现，但是，基于Beam开发的数据处理程序可以执行在任意的分布式计算引擎上，目前Dataflow、Spark、Flink、Apex提供了对批处理和流处理的支持，GearPump提供了流处理的支持，Storm的支持也在开发中。 综上所述，Apache Beam的目标是： 提供统一批处理和流处理的编程范式 能运行在任何可执行的引擎之上 - **Primary Language**: Java - **License**: Apache-2.0 - **Default Branch**: master - **Homepage**: https://www.oschina.net/p/apachebeam - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 9 - **Created**: 2021-03-16 - **Last Updated**: 2021-03-30 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # Apache Beam [Apache Beam](http://beam.apache.org/) is a unified model for defining both batch and streaming data-parallel processing pipelines, as well as a set of language-specific SDKs for constructing pipelines and Runners for executing them on distributed processing backends, including [Apache Flink](http://flink.apache.org/), [Apache Spark](http://spark.apache.org/), [Google Cloud Dataflow](http://cloud.google.com/dataflow/) and [Hazelcast Jet](https://jet.hazelcast.org/). ## Status [![Maven Version](https://maven-badges.herokuapp.com/maven-central/org.apache.beam/beam-sdks-java-core/badge.svg)](http://search.maven.org/#search|gav|1|g:"org.apache.beam") [![PyPI version](https://badge.fury.io/py/apache-beam.svg)](https://badge.fury.io/py/apache-beam) [![Python coverage](https://codecov.io/gh/apache/beam/branch/master/graph/badge.svg)](https://codecov.io/gh/apache/beam) [![Compat Check PyPI](https://python-compatibility-tools.appspot.com/one_badge_image?package=apache-beam%5Bgcp%5D)](https://python-compatibility-tools.appspot.com/one_badge_target?package=apache-beam%5Bgcp%5D) [![Compat Check at master](https://python-compatibility-tools.appspot.com/one_badge_image?package=git%2Bgit%3A//github.com/apache/beam.git%23subdirectory%3Dsdks/python)](https://python-compatibility-tools.appspot.com/one_badge_target?package=git%2Bgit%3A//github.com/apache/beam.git%23subdirectory%3Dsdks/python) [![Build python source distribution and wheels](https://github.com/apache/beam/workflows/Build%20python%20source%20distribution%20and%20wheels/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Build+python+source+distribution+and+wheels%22+branch%3Amaster+event%3Aschedule) [![Python tests](https://github.com/apache/beam/workflows/Python%20tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Python+Tests%22+branch%3Amaster+event%3Aschedule) [![Java tests](https://github.com/apache/beam/workflows/Java%20Tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Java+Tests%22+branch%3Amaster+event%3Aschedule) ### Post-commit tests status (on master branch) Lang | SDK | Dataflow | Flink | Samza | Spark | Twister2 --- | --- | --- | --- | --- | --- | --- Go | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/) | --- | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/) | --- | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/) | --- Java | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/) Python | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/)
[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/) | --- | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/) | --- XLang | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/) | --- | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/) | --- ## Overview Beam provides a general approach to expressing [embarrassingly parallel](https://en.wikipedia.org/wiki/Embarrassingly_parallel) data processing pipelines and supports three categories of users, each of which have relatively disparate backgrounds and needs. 1. _End Users_: Writing pipelines with an existing SDK, running it on an existing runner. These users want to focus on writing their application logic and have everything else just work. 2. _SDK Writers_: Developing a Beam SDK targeted at a specific user community (Java, Python, Scala, Go, R, graphical, etc). These users are language geeks and would prefer to be shielded from all the details of various runners and their implementations. 3. _Runner Writers_: Have an execution environment for distributed processing and would like to support programs written against the Beam Model. Would prefer to be shielded from details of multiple SDKs. ### The Beam Model The model behind Beam evolved from a number of internal Google data processing projects, including [MapReduce](http://research.google.com/archive/mapreduce.html), [FlumeJava](http://research.google.com/pubs/pub35650.html), and [Millwheel](http://research.google.com/pubs/pub41378.html). This model was originally known as the “[Dataflow Model](http://www.vldb.org/pvldb/vol8/p1792-Akidau.pdf)”. To learn more about the Beam Model (though still under the original name of Dataflow), see the World Beyond Batch: [Streaming 101](https://www.oreilly.com/ideas/the-world-beyond-batch-streaming-101) and [Streaming 102](https://www.oreilly.com/ideas/the-world-beyond-batch-streaming-102) posts on O’Reilly’s Radar site, and the [VLDB 2015 paper](http://www.vldb.org/pvldb/vol8/p1792-Akidau.pdf). The key concepts in the Beam programming model are: * `PCollection`: represents a collection of data, which could be bounded or unbounded in size. * `PTransform`: represents a computation that transforms input PCollections into output PCollections. * `Pipeline`: manages a directed acyclic graph of PTransforms and PCollections that is ready for execution. * `PipelineRunner`: specifies where and how the pipeline should execute. ### SDKs Beam supports multiple language specific SDKs for writing pipelines against the Beam Model. Currently, this repository contains SDKs for Java, Python and Go. Have ideas for new SDKs or DSLs? See the [JIRA](https://issues.apache.org/jira/issues/?jql=project%20%3D%20BEAM%20AND%20component%20%3D%20sdk-ideas). ### Runners Beam supports executing programs on multiple distributed processing backends through PipelineRunners. Currently, the following PipelineRunners are available: - The `DirectRunner` runs the pipeline on your local machine. - The `DataflowRunner` submits the pipeline to the [Google Cloud Dataflow](http://cloud.google.com/dataflow/). - The `FlinkRunner` runs the pipeline on an Apache Flink cluster. The code has been donated from [dataArtisans/flink-dataflow](https://github.com/dataArtisans/flink-dataflow) and is now part of Beam. - The `SparkRunner` runs the pipeline on an Apache Spark cluster. The code has been donated from [cloudera/spark-dataflow](https://github.com/cloudera/spark-dataflow) and is now part of Beam. - The `JetRunner` runs the pipeline on a Hazelcast Jet cluster. The code has been donated from [hazelcast/hazelcast-jet](https://github.com/hazelcast/hazelcast-jet) and is now part of Beam. - The `Twister2Runner` runs the pipeline on a Twister2 cluster. The code has been donated from [DSC-SPIDAL/twister2](https://github.com/DSC-SPIDAL/twister2) and is now part of Beam. Have ideas for new Runners? See the [JIRA](https://issues.apache.org/jira/issues/?jql=project%20%3D%20BEAM%20AND%20component%20%3D%20runner-ideas). ## Getting Started To learn how to write Beam pipelines, read the Quickstart for [[Java](https://beam.apache.org/get-started/quickstart-java), [Python](https://beam.apache.org/get-started/quickstart-py), or [Go](https://beam.apache.org/get-started/quickstart-go)] available on our website. ## Contact Us To get involved in Apache Beam: * [Subscribe](mailto:user-subscribe@beam.apache.org) or [mail](mailto:user@beam.apache.org) the [user@beam.apache.org](http://mail-archives.apache.org/mod_mbox/beam-user/) list. * [Subscribe](mailto:dev-subscribe@beam.apache.org) or [mail](mailto:dev@beam.apache.org) the [dev@beam.apache.org](http://mail-archives.apache.org/mod_mbox/beam-dev/) list. * [Join ASF Slack](https://s.apache.org/slack-invite) on [#beam channel](https://s.apache.org/beam-slack-channel) * Report issues on [JIRA](https://issues.apache.org/jira/browse/BEAM). Instructions for building and testing Beam itself are in the [contribution guide](https://beam.apache.org/contribute/). ## More Information * [Apache Beam](https://beam.apache.org) * [Overview](https://beam.apache.org/use/beam-overview/) * Quickstart: [Java](https://beam.apache.org/get-started/quickstart-java), [Python](https://beam.apache.org/get-started/quickstart-py), [Go](https://beam.apache.org/get-started/quickstart-go) * [Community metrics](https://s.apache.org/beam-community-metrics)