转自:https://wso2.com/library/articles/2018/02/stream-processing-101-from-sql-to-streaming-sql-in-ten-minutes/ We have entered an era where competitive advantage comes from analyzing, understanding, and responding to an organization’s data. When doing…

转自:https://iwringer.wordpress.com/2013/08/07/understanding-complex-event-processing-cep-operators-with-wso2-cep-siddhi/ CEP model has many sensors. A sensor can be a real sensor (e.g. temperature sensor), some agent, or a system that support instrume…

原文:https://iwringer.wordpress.com/2015/08/03/patterns-for-streaming-realtime-analytics/ Introduction More and more use cases, we want to react to data faster, rather than storing them in a disk and periodically processing and acting on the data. This…

Update: KSQL is now available as a component of the Confluent Platform. I’m really excited to announce KSQL, a streaming SQL engine for Apache Kafka®. KSQL lowers the entry bar to the world of stream processing, providing a simple and completely inte…

Where did we come from? With the 0.9.0-milestone1 release, Apache Flink added an API to process relational data with SQL-like expressions called the Table API. The central concept of this API is a Table, a structured data set or stream on which relat…

转自:https://iwringer.wordpress.com/2012/05/18/how-to-scale-complex-event-processing-cep-systems/ What is CEP? Complex event processing (CEP) systems query events on the fly without storing them. For an introduction and definition of CEP, please refer…

第0章 预备知识0.1 Scala0.1.1 Scala 操作符0.1.2 拉链操作0.2 Spark Core0.2.1 Spark RDD 持久化0.2.2 Spark 共享变量0.3 Spark SQL0.3.1 RDD.DataFrame 与 DataSet0.3.2 DataSet 与 RDD 互操作0.3.3 RDD.DataFrame 与 DataSet 之间的转换0.3.4 用户自定义聚合函数(UDAF)0.3.5 开窗函数0.4 Spark Streaming0.4.1 Dst…

Few weeks back, while I was enjoying my holidays in the south of Italy, I started receiving notifications about an imminent announcement by Confluent. Reading the highlights almost (...I said almost) made me willing to go immediately back to work and…

在Sqoop往mysql导出数据的时候报了这个错误,一开始还以为是jar包没有打进去或者打错位置了,未解便上网查询. Error reading from database: java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@27ce24aa is still active. No statements may be issued when any streaming result sets are…

此文已由作者岳猛授权网易云社区发布. 欢迎访问网易云社区,了解更多网易技术产品运营经验. 实时计算的一个方向 实时计算未来会成为一个趋势,基本上所有的离线计算任务都能通过实时计算来完成,对于实时计算来算,除了性能,延迟性和吞吐量这些硬指标要求以外,我觉得易用性上面应该是未来的一个发展方向,毕竟现在的实时计算入storm,flink,sparkstreaming等都是通过API来进行的,这些使用起来都不太方便,后续更大的一个侧重方向应该是SQL ON STREAMING,对storm了解不是很多,…