文章浏览阅读3.3k次。一：当安装好CDH的hadoop后，准备安装kafka,可是CDH上添加服务是这样的，没法直接添加，需要添加相应包才可以：Apache Kafka is publish-subscribe messaging rethought as a distributed commit log. Before adding this service, ensure that ei......
文章浏览阅读3.3k次。一：当安装好CDH的hadoop后，准备安装kafka,可是CDH上添加服务是这样的，没法直接添加，需要添加相应包才可以：Apache Kafka is publish-subscribe messaging rethought as a distributed commit log. Before adding this service, ensure that ei......
文章浏览阅读3.3k次。一：当安装好CDH的hadoop后，准备安装kafka,可是CDH上添加服务是这样的，没法直接添加，需要添加相应包才可以：Apache Kafka is publish-subscribe messaging rethought as a distributed commit log. Before adding this service, ensure that ei......
文章浏览阅读397次。use dws_events;create database if not exists dws_events;-- 在dws层记录一下，每一位用户有多少个朋友 user_friend_count;drop table if exists user_friend_count;create table if not exists user_friend_count stored as orc as select userid,count(*) friendcoun......
