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Overview 2.1.1 Why a Workflow Dispatching System A complete data analysis system is usually composed of a large number of task units: shell scripts, java programs, mapreduce programs, hive scripts, etc. There is a time-dependent contextual dependency between task units In order to organize such a complex execution plan well, a workflow scheduling system is needed to schedule execution; for example, we might have a requirement that a business system produce 20G raw data a day and we process it every day, Processing steps are as follows: ...

Editor's note: This is the Jamcam Founder's README. The application offered by the start-up is simple, but extremely successful: with Jamcam, the video you are recording will automatically add the music you are listening to on the iphone as a background music for the video. Is it more convenient to share with friends? It downloads more than 5,000 times in the first week of release. And its founder's story begins with self-study on Google. Spontaneous learning: completely curious. One year after graduating from college, I worked for a small company on the outskirts of Toronto to be an audio-visual technical advisor. This company ...

This is the tenth year of my work, today is also my birthday, if the way to review, there should be a lot of stories, if you want to say, I always habitually from the 5th year of my work began, on the one hand 5 years ago the work experience is mediocre, unknown, lack of drama, basic in small companies, Traditional IT companies are hanging out and 5 years of work resumes will be more concerned about, because it is in TX, because there is a chance to do the experience of the product design, is exposed to a star position, on the other hand, because I was also called marking, in the design of the river, the word generation show that also ...

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Flume-based Log collection system (i) architecture and Design Issues Guide: 1. Flume-ng and scribe contrast, flume-ng advantage in where? 2. What questions should be considered in architecture design? 3.Agent crash how to solve? Does 4.Collector crash affect? What are the 5.flume-ng reliability (reliability) measures? The log collection system in the United States is responsible for the collection of all business logs from the United States Regiment and to the Hadoop platform respectively ...

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The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall 2005 years time I contacted starts to do the website. At that time, I remember using DZ program to do a video download Exchange site. If you insist on it at the time, now at least the daily flow can reach 100,000. For me at that time, or a brilliant shameless college era, with their own longing for their own to do a lot of young people should not do. At that time my technology is very general, Win2003,*nix,web server or anything do not understand. Just remember to fiddle with DW every day, okay ...