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  Curator tutorial (3) distributed Lock

  Shared lock @ Testpublic void sharedLock () throws Exception {/ / create shared lock InterProcessLock lock = new Inter

  2022-06-03 03:44:33 Views: 228
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  Hadoop big data develops learning roadmap stage 1

  With the development of Hadoop, family products have been very rich, which can meet the processing needs of big data in different scenarios. As the current mainstream big data processing technology, the big data business of many companies in the market is based on Hadoop, and has very mature solutions for many scenarios.

  2022-06-03 03:44:33 Views: 297
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  Red Hat / CentOS ext4 format large partitions above 16T

  In the Red Hat / CentOSext4 formatted large partition XX project, the client server operating system is the redhat6.4 version, with 40T of disk space for storing structured data, but not mounted to any directory. For MPP cluster database, considering the security of our database

  2022-06-03 03:44:25 Views: 257
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  Installation configuration of jenkins+gitlab+maven+tomcat continuous integration environment

  Jenkins+gitlab+maven+tomcat, this environment mainly implements automatic construction and deployment of java web applications. The workflow is as follows: submit the code to gitlab--jenkins to trigger the build task-- maven compilation and packaging-- je

  2022-06-03 03:44:25 Views: 228
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  Interface Automation Test PHPUnit- introduces jenkins Automation execution

  After the testing framework is finished, we want him to run it regularly to minimize human intervention, which we can do with jenkins. Here, I would like to say that the testing framework is improved step by step, which requires manual intervention at the beginning, and only after slow running-in and stability can it be separated from manual work and become semi-automatic.

  2022-06-03 03:44:24 Views: 241
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  Time and emotional factors of Software Architecture

  Quality attribute is an important aspect of software architecture, and quality attribute also contains time and emotion factors. In the 1st century BC, Marcus Vitruvius Pollio, an ancient Roman imperial engineer and architect, first put forward the three elements of architecture in his Ten Books of Architecture.

  2022-06-03 03:44:20 Views: 254
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  Set up zookeeper cluster

  Simple zookeeper cluster construction without too many optimized configuration steps: 1: go to the official website to download a compressed package, and then decompress 2: after decompression, modify the zoo_sample.cfg in the conf folder and copy it into zoo.cfg3: modify zoo.cf.

  2022-06-03 03:44:20 Views: 231
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  Arduino built-in tutorial

  The built-in example of Arduino's built-in tutorials is sketches (separate scripts and programs are called "sketches"), which are included in Arduino IDE and open them by clicking on the tools menu: File > Examples. Demonstration of these simple programs

  2022-06-03 03:44:19 Views: 270
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  Disable DNS query for Tomcat tuning

  When the web application records the information of the client, it also records the IP address of the client or converts the machine name to the IP address through the domain name server. DNS queries need to take up the network and include getting the corresponding I from many remote servers or ineffective servers

  2022-06-03 03:44:19 Views: 206
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  Mapreduce, consolidated data dictionary table

  The hole has been stepped on for a long time. The result is that the context in the map method is miswritten, resulting in an error. Source data content. You just want the second column in the data table to be replaced with the second column in the dictionary table. That is, the red in the dictionary table is replaced by the blue of the dictionary table. / / data Table data.txt//on

  2022-06-03 03:44:16 Views: 255
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  Kafka, why is that fast?

  Kafka is a high throughput message middleware that can be deployed on cheap hosts. There are two reasons for the speed: 1. In terms of writing data: the data written is written to disk sequentially; the speed of reading and writing to memory mapped files disk depends on how you use it.

  2022-06-03 03:44:16 Views: 283
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  Midamble allocation Learning of TDSCDMA Layer1

  There are mainly two kinds of midamble,default midamble and common midamble. First of all, let's talk about common midamble. The use of common midamble is through high-level allocation of physical channels.

  2022-06-03 03:44:16 Views: 295
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  01. Building MAVEN Project of mybatis based on IDEA

  Base environment IDEAMAVEN project directory mysql database Maven Pom add mybatis and dependency packages for mysql

  More Internet Technology

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    Example Analysis of multiple join implementations of MapReduce

    This article will explain in detail the example analysis of a variety of join implementations of MapReduce. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article. An overview of joi in RDBMS

    2022-06-01 11:16:12Details

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    What does the dc5v interface mean?

    This article will explain in detail what the dc5v interface means. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article. Dc5v interface indicates that the interface is DC power supply, and the voltage is 5v, where DC represents DC power supply.

    2022-06-02 15:42:10Details

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    What does the input interface mean?

    This article mainly shows you "what is the meaning of input interface". It is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what does input interface mean?" Input connection

    2022-06-02 11:03:20Details

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    To find a folder where wps fonts are stored

    Editor to share with you to find the wps font storage folder steps, I believe that most people do not know much, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it! The wps font is on disk C\ WIND

    2022-06-02 14:58:30Details

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