shanthoosh commented on a change in pull request #948: SAMZA-2124: Add Beam API doc to the website URL: https://github.com/apache/samza/pull/948#discussion_r264771114
########## File path: docs/learn/documentation/versioned/api/beam-api.md ########## @@ -0,0 +1,109 @@ +--- +layout: page +title: Apache Beam API +--- +<!-- + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to You under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with + the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +--> + +### Table Of Contents +- [Introduction](#introduction) +- [Basic Concepts](#basic-concepts) +- [Apache Beam - A Samza’s Perspective](#apache-beam---a-samza’s-perspective) + +### Introduction + +Apache Beam brings an easy-to-use, but powerful API and model for state-of-art stream and batch data processing with portability across a variety of languages. The Beam API and model has the following characteristics: + +- *Simple constructs, powerful semantics*: the whole beam API can be simply described by a `Pipeline` object, which captures all your data processing steps from input to output. Beam SDK supports over [20 data IOs](https://beam.apache.org/documentation/io/built-in/), and data transformations from simple [Map](https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/MapElements.html) to complex [Combines and Joins](https://beam.apache.org/releases/javadoc/2.11.0/index.html?org/apache/beam/sdk/transforms/Combine.html). + +- *Strong consistency via event-time*: Beam provides advanced [event-time support](https://beam.apache.org/documentation/programming-guide/#watermarks-and-late-data) so you can perform windowing and aggregations based on when the events happen, instead of when they are consumed. The event-time mechanism improves the accuracy of processing results, and has repeatability when reprocessing the same data set. Review comment: Minor: 1. s/instead of when they are consumed/instead of arrival time? 2. s/and has repeatability/and guarantees repeatability in results/ ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
