etl pipeline

--------------------------------------------------------------------------------------------------------------- ------------------Creation of pipelinesPipeline is one of the most basic inter-process communication mechanisms. Pipelines are created by the pipe function:Calling the pipe function creates a buffer in the kernel for interprocess communication, a buffer called a pipe that has a read end and a write end.The pipe function accepts a parameter, which is an array of two integers, and if the

Organize from the networkUnix IPC includes: piping (pipe), named pipe (FIFO) and signal (Signal)Piping (pipe)Pipelines can be used for communication between affinity processes, and well-known pipelines overcome the limitations of pipe without name, so that, in addition to having the functions of a pipeline, it allows communication between unrelated processes;Implementation mechanism:A pipeline is a buffer t

address http://localhost:34827/api/home/webhost:Selfhost Boarding Method:program file code in the Selfhost project: Static voidMain (string[] args) {Assembly.Load ("Webapi,version=1.0.0.1,culture=neutral,publickeytoken=null"); Httpselfhostconfiguration Configuration=NewHttpselfhostconfiguration ("http://localhost:34827/"); using(Httpselfhostserver server =Newhttpselfhostserver (configuration)) {Server. Configuration.Routes.MapHttpRoute (Name:"default", Routetemplate:"Api/{controller}/{fr

Java pipeline stream Even if the graphic user interface is dominant today, console output still plays an important role in Java programs. The console is not only the default stack trace and error message output window for Java programs, but also a practical debugging tool (especially for those who are used to using println ). However, console windows have many limitations. For example, on Windows 9x, the DOS console can only accommodate 50 rows of out

Key Technologies of multi-core application architecture-software pipeline and SOA Basic Information Original Title: Software pipelines and SOA: releasing the power of multi-core processingOriginal Press: Addison-Wesley professionalAuthor: (US) Cory IsaacsonTranslator: Wu ZhongxinSeries name: Professional Technical Series for developersPress: Machinery Industry PressISBN: 9787111305392Mounting time:Published on: February 1, June 2010Start: 16Page num

Implementation conception of software development and standardized pipeline development I recently saw a blog post discussing the topic of standardized pipeline development mode. However, this blog post only raised this question and did not respond. This is actually a big problem. I have been engaged in software development for so many years, but I still haven't seen any domestic company actually do it. I h

This section is another way to learn about process communication: pipelines. A pipeline is a process that connects a stream of data to another process's channel, which typically connects the output of one process to the input of another process through a pipeline. The application of pipelines is often seen in shell commands, such as we want to list all files named "Test" under the current file: Ls-l | grep

Label:in the two previous articles the basic aggregation function of data aggregation in MongoDB count, distinct, group > and the MapReduce of data aggregation in MongoDB >, we've provided two implementations for data aggregation, and today, in this article, we talk about another way to implement data aggregation in MongoDB-the aggregation pipeline aggregate. In the face of the user's demand for data statistics, MONGODB has introduced a new functi

Asp. NET Pipeline and application life cycleASPPipeline and application life cycleSection 8.1 Describes the system architecture of IIS and the overall process of HTTP request processing, where you can know that each ASP. NET site corresponds to a Web application that responds to HTTP requests and provides the user with the information they need. So, ASP. NET application specifically responds to HTTP requests? What are the specific processing processes

recently using a framework within the company to write map reduce found no encapsulation Hadoop streaming these things, check the next pipeline related thingsHadoop Pipeline Detailed . / Hadoop / 1 Comment I. DescriptionHadoop 2. X compared to 1.x has a large change, like the MapReduce layer architecture and the code is basically completely rewritten, in the HDFS layer added fe

Fundamentals of GPU and shader technology (all 8 back)Http://www.opengpu.org/forum.php?mod=viewthreadtid=7376extra=page%3D1Http://www.opengpu.org/bbs/forum.php?mod=viewthreadtid=7550extra=page%3D1concept and rendering pipeline for 3D graphics (render Pipeline)The 3D graphics history is described earlier, and the next step is to explain the process of 3D graphics. flowchart for 3D graphics pipelineFigure 1 i

LinuxPipeline of interprocess communication1.Classification of pipelines:By name, pipelines are divided into famous pipes and anonymous pipelines.2. nickname pipeline A pipeline is a way of one-way communication between processes, because its communication is only one direction, so the following disadvantages:1. communication is only a single direction, communication is too limited2. Its buffer size is c

Tags: LinuxOriginal link: http://blog.csdn.net/qq_38646470/article/details/79564392#符号表示|and piping special image.# Effect:Pipeline is a very important way of communication in Linux, is to connect the output of one program directly to the input of another program, often said pipe refers to the nameless pipe, the nameless pipe can only be used in the relationship between the process, which is its most important difference with the famous pipe.A well-known pipe called Named pipe or FIFO (first-in,

Reprinted: http://www.ibm.com/developerworks/cn/linux/l-pipebid/ Linux provides popen and pclose functions (1) for creating and disabling pipelines to communicate with another process. The interface is as follows: FILE *popen(const char *command， const char *mode);int pclose(FILE *stream); Unfortunately, the pipeline created by popen can only be one-way-the mode can only be "R" or "W", but not a combination-the user can only choose to

Many operating systems boast of the pipe is often the smallpox and dragon,Good-hearted point of the paste segment pseudo-code to show you, for the book out of the book, just a bunch of concepts piled up on it, so that people can not understand at all,Such a simple concept, obviously a few words to explain clearly, some books also specifically open a chapter to discuss this issue, there is no need!First, the basic conceptIn fact, the concept of the pipeline