Overview

Alibaba Cloud Elastic MapReduce (EMR) is a big data processing solution that runs on the Alibaba Cloud platform. EMR is built on Alibaba Cloud ECS instances and is based on open-source Apache Hadoop and Apache Spark. EMR allows you to use the Hadoop and Spark ecosystem components, such as Apache Hive, Apache Kafka, Flink, Druid, and TensorFlow, to analyze and process data. You can use EMR to process data stored on different Alibaba Cloud data storage service, such as Object Storage Service (OSS), Log Service (SLS), and Relational Database Service (RDS).

Benefits

• Easy-to-use You can quickly create clusters without the need to configure hardware and software. All maintenance operations are completed on its Web interface.
• Cost-effectiveness You can create clusters and dynamically scale in and out the number of compute nodes based on current computing needs.
• Stability EMR provides a deeply optimized cluster environment, automated background maintenance, and multiple online support channels.
• Security EMR supports Kerberos authentication and data encryption. You can use RAM users to refine the management of service permissions.

Features

Automated Cluster Deployment and Expansion

You can quickly deploy and expand clusters from a Web interface without the need to manage the hardware and software. Cluster Creation You can quickly deploy multiple types of clusters, such as Hadoop, Kafka, Druid, and ZooKeeper. Cluster Expansion You can quickly add any types of nodes to the existing clusters. Scheduled Cluster Creation You can execute plans to create clusters, execute jobs at the scheduled time, and release clusters after job execution. Automatic Component Deployment You can add, configure, and maintain components based on your needs. Dynamic Expansion You can scale in and out cluster compute resources at the specified time to reduce the total cost of ownership (TCO).

Workflow Scheduling

EMR offers simple job orchestration and scheduling. Job Editing and Management EMR supports graphical job editing and management for you to execute and orchestrate multiple types of jobs. Workflow Scheduling EMR supports job and dependency scheduling. You can orchestrate and schedule jobs as DAG-based workflows. Dynamic Clusters You can use EMR to start a temporary cluster to execute jobs at the scheduled time and stop the cluster after job execution. Guaranteed Job Execution When EMR fails to execute a job, it immediately sends an alarm. You can also set EMR to automatically re-execute the job.

Multiple Components

EMR provides multiple components. Hadoop A big data processing platform with petabytes of storage capacity and compute capability. Spark A memory-based new-generation distributed computing framework that supports offline and real-time computing, SQL syntax, and machine learning. Hive An offline data processing system based on Hadoop. Hive supports structured table management based on Hadoop Distributed File System (HDFS) and provides query syntax that is similar to SQL for data analysis and processing. Kafka A high-throughput and reliable distributed message publication and subscription system. Storm A real-time compute engine that supports real-time data processing within milliseconds. ZooKeeper A distributed and open-source coordination service that can ensure the consistency of distributed applications. Hue A management tool and Web interface. Oozie An open-source job scheduling tool. Druid An open-source real-time big data analysis software. Flink A distributed engine for batch processing and stream processing.

Complete Ecosystem Support

EMR is deeply integrated with Alibaba Cloud services. Support for OSS You can use Object Storage Service (OSS) as HDFS in most of the EMR components. Support for SLS EMR provides an SDK which allows you to input real-time data (RTD) from Log Service (SLS). Support for Elasticsearch Hadoop carries a built-in ES-Hadoop plug-in which supports all Elasticsearch operations. Support for MaxCompute EMR supports reading and writing Alibaba Cloud MaxCompute data. Support for Alibaba Cloud Message Services EMR supports reading and writing data from Alibaba Cloud message services, such as Message Queue and Message Service, and supports SDK integration.