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  Automatic generation of mybatis-generator code

  1. Prepare jar package 2, generatorConfig.xml manually modify the database link, and package name

  2022-06-03 03:37:39 Views: 230
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  A good development method can improve efficiency by more than 30%.

  Lesson 11, "5 minutes from student to programmer." Finally start to do the function, I believe that the novice will be a little excited and nervous, we take this wonderful feeling to start the code journey. When many beginners get the function, they begin to copy the code and enjoy being a code porter, which is not the right way to start.

  2022-06-03 03:37:25 Views: 260
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  Process of installing hadoop-2.8 under mac or linux

  Install javall / usr/bin under hadoop1,mac on mac | grep'java' default: / System/Library/Frameworks/JavaVM.framework/Version

  2022-06-03 03:37:21 Views: 275
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  [MantisBT] how to use SQL to add version information in bulk

  The products tested are divided into app side and web side, with a total of 7 subsystems. According to the company's testing process, testers submit bug to the current version; developers specify the version to be repaired when repairing, so there must be at least two sets of version numbers in MantisBT, that is, to add

  2022-06-03 03:37:21 Views: 229
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  In-depth Analysis of QucikTest Test objects

  Through the introduction and operation of the previous series of QuickTest blog posts, we have a certain understanding of QuickTest. This blog article has an in-depth understanding and analysis of the objects under QuickTest through examples with pictures and texts. 1. QuickTest's original work

  2022-06-03 03:37:10 Views: 291
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  Study notes-- hadoop

  Hadoophadoop-1.2.1.tar.gz jdk-6u32-linux-x64.binUseradd-u 900 hadoopMv jdk1.6.0_32 / home/hadoopMv h

  2022-06-03 03:37:02 Views: 285
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  0039-how to use the Python Impyla client to connect Hive and Impala

  Warm Tip: to see the high-definition no-code picture, please open it with your mobile phone and click the picture to enlarge. 1. Documentation purpose following the previous chapter on how to install Anaconda& in a CDH cluster to build a Python private source, this chapter focuses on how to use Pyton Impyla

  2022-06-03 03:36:38 Views: 206
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  GT mobile phone performance testing tool 2: configuration in the project

  GT demo official sample document http://gt.qq.com/docs/i/GTiOSUserGuide.pdf Cloud Notebook practice GT process embedded GT framework:step1 download frame in Cloud Notebook project

  2022-06-03 03:36:37 Views: 277
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  Lr (2)-"rendezvous point" and "transaction" for script debugging

  This article mainly introduces the insertion of "transaction" and "rendezvous point" in the script part, and the meaning of the rendezvous point: also known as the concurrency point. Lr realizes the real concurrency through the rendezvous point, and when the script runs to the rendezvous point, it will be executed according to the concurrency strategy of the scene. (note that the rendezvous point scripture

  2022-06-03 03:36:33 Views: 201
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  Hadoop (cdh version) download, install and configure

  Download the hadoop package, which is version 5.14.2 (address: http://archive.cloudera.com/cdh6/cdh/5/) 2. Use the Xftp tool to pull the package to the virtual machine / opt directory

  2022-06-03 03:36:33 Views: 288
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  ObjectInspector Design in Hive

  ObjectInspector is a confusing concept in Hive at first glance. It took a long time to understand when I read the Hive source code. When I read it, I found that ObjectInspector plays a very important role in decoupling the data usage and the data grid.

  2022-06-03 03:36:33 Views: 217
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  Data cleaning, merging, transformation and reconstruction

  Data cleaning data cleaning is a key step in data analysis. Does it have a direct impact on the processing data that needs to be modified? Is there anything that needs to be changed? How should the data be adjusted to apply to the following analysis and mining? Is an iterative process, and these cleanings may need to be performed more than once in the actual project

  2022-06-03 03:36:27 Views: 272
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  Sort out the IO streams in JAVA (character streams and byte streams)

  Io streams in java are divided into two categories, character and byte: OutputStream and the parent class of InputStream byte stream, abstract. OutputStream has two interfaces that provide implementation, closable and flushable. Writ

  2022-06-03 03:36:27 Views: 260
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  One article will take you to understand Livy-- 's Apache Spark-based REST service

  Background Apache Spark, as the most popular open source big data computing framework, is widely used in data processing and analysis applications. It provides two ways to deal with data: one is interactive processing, such as starting with spark-shell or pyspark scripts.

  2022-06-03 03:36:27 Views: 209
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  Big data era: how far can traditional BI go?

  Engaged in BI for many years, experienced the great construction of the business analysis system, the great development period, also had the honor to be in the alternation between big data and the traditional BI system, so in particular, how far can the traditional BI go? Technology serves the business, so let's not talk about technology here, but explain the reasons from the user's point of view.

  2022-06-03 03:36:27 Views: 204
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  Cdh summed up 002 after reading the official documents

  1. Cloudera Manager contains internal rack-aware scripts, but you must specify the rack where the hosts in the cluster are located. If your cluster contains more than 10 hosts, Cloudera recommends that you specify racks for each host. HDFS,MapReduce and

  2022-06-03 03:36:26 Views: 258
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  Install the Oozie4.1.0-CDH version

  It took a long time to install oozie, first the source package, but gave up. Then there is the installed version of CDH, which has been working for a long time and often reports all kinds of errors. Finally sorted out this article. This installation process also applies to other CDH versions of oozie4.1.0. First

  2022-06-03 03:36:22 Views: 228
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  Data Center: trusted Agile data Center Construction practice | sharing record

  Content Source: Citic Institute of Technology Phase 2 Technology Salon-online Live broadcast | sharing of Agile data Intermediate platform Construction practice Guest: Lu Shan, head of CITIC data Intermediate platform team, directed: Citic launched a series of big data open source tools in 2017, including familiar DBus and Wormh.

  2022-06-03 03:36:17 Views: 255
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  Initialization Construction of hadoop Environment

  First, download the hadoop binary package and the jdk file package, and place them in the path of the appropriate directory to extract (omit the steps). Second, create a directory where the extracted directory from the hadoop on the host machine is dedicated to the hdfs file, and put the extracted j

  2022-06-03 03:36:08 Views: 209
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  About the rules of naming

  Namspace- > noun::adjective::adjective naming noun adjective adjective package Disk; package Disk::Audio; package Disk::DVD

  2022-06-03 03:36:08 Views: 292