Apache Kylin Apache Kylin is an open source distributed analytics engine designed to provide a SQL interface and multi-dimensional analysis on Hadoop and Alluxio supporting extremely large datasets.eBay , and is now a project of the Apache Software Foundation .History The Kylin project was started in 2013, in eBay's R&D in Shanghai, China . In Oct 2014, Kylin v0.6 was open sourced on github.com with the name "KylinOLAP".Apache Software Foundation incubator.December 2015 , Apache Kylin graduated to be a Top Level Project.commercial support for Apache Kylin and consists primarily of the original developers of the open source code .Architecture Apache Kylin is built on top of Apache Hadoop , Apache Hive , Apache HBase , Apache Calcite , Apache Spark and other technologies. These technologies are very powerful and matured, making Kylin able to support massive data load, and easily scale. REST Server: Receive and response user or API requests Metadata: Persistent and manage system, especially the cube metadata; Query Engine: Parse SQL queries to execution plan , and then talk with storage engine ; Storage Engine: Pushdown and scan underlying cube storage ; Job Engine: Generate and execute MapReduce or Spark job to build source data into cube;Users production . Typical users includes eBay, Meituan, XiaoMi, NetEase, Beike, Yahoo! Japan .Roadmap Apache Kylin roadmap : Hadoop 3.0 support Fully on Spark Cube engine Connect more data sources Ad-hoc queries without Cubing Better storage Real-time analytics with Lambda Architecture
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