Simple Example Use Cases MovieLens User Ratings First, create a table with tab-delimited text file format: CREATE TABLE u_data ( userid INT, movieid INT, rating INT, unixtime STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' STORED AS TEXTFILE;…
不多说,直接上干货! 一切来源于官网 http://kafka.apache.org/documentation/ Apache Kafka™ is a distributed streaming platform. What exactly does that mean? Kafka是一个分布式流数据处理平台.这到底是什么意思呢? We think of a streaming platform as having three key capabilities: 我们认为一个流数据处理平台必须…
铭文一级: 第八章:Spark Streaming进阶与案例实战 updateStateByKey算子需求:统计到目前为止累积出现的单词的个数(需要保持住以前的状态) java.lang.IllegalArgumentException: requirement failed: The checkpoint directory has not been set. Please set it by StreamingContext.checkpoint(). 需求:将统计结果写入到MySQLcre…
铭文一级: Spark Streaming is an extension of the core Spark API that enables scalable, high-throughput, fault-tolerant stream processing of live data streams. Spark Streaming个人的定义: 将不同的数据源的数据经过Spark Streaming处理之后将结果输出到外部文件系统 特点 低延时 能从错误中高效的恢复:fault-toler…
铭文一级: Flume概述Flume is a distributed, reliable, and available service for efficiently collecting(收集), aggregating(聚合), and moving(移动) large amounts of log data webserver(源端) ===> flume ===> hdfs(目的地) 设计目标: 可靠性 扩展性 管理性 业界同类产品的对比 (***)Flume: Cloudera/A…
不多说,直接上干货! 一切来源于官网 http://kafka.apache.org/documentation/ Step 8: Use Kafka Streams to process data Step : 使用Kafka Stream来处理数据 Kafka Streams is a client library of Kafka for real-time stream processing and analyzing data stored in Kafka brokers. This…