http://samza.incubator.apache.org/learn/documentation/0.7.0/comparisons/introduction.html 这里有一些使得Samza和其它流处理项目不同的高层设计决策. The Stream Model 流模型 流是Samza job的输入和输出.Samza有非常强的流模械型——不仅是一个简单的消息交换系统.Samza中的stream是一个分区的.每个分区有序的.可重放的.多订阅者的,无损的消息序列.(A stream in…
这一页提供了关于流处理的背景知识,描述什么是Samza,以及它为何而生. what is messaging?什么叫消息? 消息系统是用来实现近实时异步计算的一种流行方式.当事件发生时,消息可以被放在消息队列里(ActiveMQ, RabbitMQ),发布-订阅系统(Kestrel, Kafka)里,或者日志汇集系统(Flume,Scribe)里.下游的消费者从这些系统里读消息,进行处理,或者根据消息内容采取行动. 假如你有一个网站,并且每次有人加载一个网页,就发送发一个"用户查看了页面&q…
HDFS Architecture HDFS Architecture(HDFS 架构) Introduction(简介) Assumptions and Goals(假设和目标) Hardware Failure(硬件失效是常态) Streaming Data Access(支持流式访问) Large Data Sets(大数据集) Simple Coherency Model(简单一致性模型) "Moving Computation is Cheaper than Moving Data&q…
HDFS Architecture HDFS Architecture(HDFS 架构) Introduction(简介) Assumptions and Goals(假设和目标) Hardware Failure(硬件失效是常态) Streaming Data Access(支持流式访问) Large Data Sets(大数据集) Simple Coherency Model(简单一致性模型) “Moving Computation is Cheaper than Moving Data”(…
The fundamental idea of YARN is to split up the functionalities of resource management and job scheduling/monitoring into separate daemons. The idea is to have a global ResourceManager (RM) and per-application ApplicationMaster (AM). An application i…
Flume官方文档翻译--Flume 1.7.0 User Guide (unreleased version)(一) Logging raw data(记录原始数据) Logging the raw stream of data flowing through the ingest pipeline is not desired behaviour in many production environments because this may result in leaking sensit…
zhuan :https://www.linkedin.com/pulse/100-open-source-big-data-architecture-papers-anil-madan Big Data technology has been extremely disruptive with open source playing a dominant role in shaping its evolution. While on one hand it has been disruptiv…
