Hive window function nanny – level tutorial
In SQL, there is a class of functions called aggregate functions, such as sum(), AVg (), Max (), etc. These functions can aggregate multiple rows...
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Tag: Big data
Hive Metadata description and Application
January 6, 2024
by Jason Larsen
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Underlying data The underlying data is stored in the DISTRIBUTED storage system (HDFS). 2. Metadata Metadata information is maintained in MetaStore. The default Hive metadata...
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What is the Workflow Design Pattern?
January 6, 2024
by Sonya Reynolds
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What is the Workflow Design Pattern? Workflow System with pictures and pictures, and practice to deepen the impression
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Universal adapter (1) extracts the ViewHolder
January 6, 2024
by Andrea Oliver
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<span style="font-size:24px; >p</span><span style="font-size:18px;" >ackage com.example.import java.u...
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20 pictures to make you learn the whole way of warehouse construction in one minute
January 6, 2024
by 沈傑克
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Recently, I have been combing my knowledge system to make up for omissions. At the same time, I am also tutoring several students to learn...
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Learn Big Data – Data Warehouse Theory from 0
January 6, 2024
by Hrishita Koshy
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A data warehouse (DW) is a topic-oriented, integrated, stable, time-varying collection of data used to support the management decision process. Topics are the areas of...
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Create reuse mechanism of openLooKeng Connector based on Hive Connector
January 6, 2024
by Lydia Fisher
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OpenLooKeng is an open source and efficient Data virtualization analysis engine. In this issue, a partner from Everbright Bank will share a blog for us,...
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Data warehouse index – label, dimension – measure, natural key – proxy key and other terms in depth analysis
January 6, 2024
by Dr. Carol Jones
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As a data person, is he often surrounded by a variety of nouns, is he vaguely aware of many of them? Although some words are...
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Hbase Learning 00– Hbase Introduction
January 6, 2024
by Anita Nelson
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High reliability, including the following: Data cannot be lost: Hbase relies on the HDFS to back up data to ensure data loss. Services cannot be...
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Shence DATA A/B test: To change the strain, to give users A better experience “pet”
January 6, 2024
by Dr. Marilyn Sutton
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Shence data launched A/B test, combined with user behavior analysis, to bring solutions for enterprises to cope with user changes, maximize value output and efficiency,...
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Getting started with ClickHouse: Data query process parsing
January 6, 2024
by Lori May
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ClickHouse is a ROLAP column database that helps you quickly get the "analytical" data you want in high-volume data analysis scenarios. This article mainly explains...
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Hadoop-mapreduce learning (I, MR Introduction, MR Running)
January 6, 2024
by William Gray
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MR framework introduction 2. A simple MapReduce program (word count) three. Introduction of some concepts to be used (prepared for the following) iv. If YRAN...
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The HBase architecture is really great!
January 6, 2024
by Sarah Stewart
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Today, I will introduce the HBase architecture design. Why is the HBase architecture design so great? The content of this article will not be very...
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Big Data Must know must know series — Data warehouse layered architecture and three-tier architecture process
January 6, 2024
by Henry Anderson
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Introduction Typical hierarchical structure of data warehouse: 3-layer structure [ODS layer, DW layer and DA layer] 1) Data of ODS layer: original data, usually from...
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HBase, directing, ElasticSearch
January 6, 2024
by Mrs. Marie Gardner
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Currently, the operation result data of Spark needs to be stored, which requires high query speed. Therefore, HBase, MongoDB, and ElasticSearch distributed databases are selected...
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Adapter mode (Factory Mode 8)
January 6, 2024
by 周琬婷
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Super. To access the object being adapted. Use the request() method of the adapted object directly inside the adapter.
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Hadoop- Small file processing
January 6, 2024
by 徐冠霖
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Both HDFS and MapReduce of Hadoop are large files for users to process a large amount of data. For small files, Namenode records each block...
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Universal adapter (2) Extract CommonAdapter
January 6, 2024
by Brett Johnson
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<span style="font-size:18px;" >package com.example.import java.util.import android.content.import android.view.import android.view.import and...
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MapReduce Example: Reduce side connections in Hadoop MapReduce
January 6, 2024
by Nicola Gardner
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Abstract: In the sorting and Reducer phases, the reduce side connection process generates huge network I/O traffic. In this phase, the values of the same...
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Sorry! Hbase LSM trees can do whatever they want!
January 6, 2024
by 熊雅涵
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Let's start with a question: LSM trees are a very innovative data structure used in HBase. In representative relational databases such as MySQL, SQLServer and...
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Data warehouse components: HBase cluster environment construction and application case
January 6, 2024
by Dominic Carr
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Hadoop's native feature is to solve the offline batch processing scenario of large-scale data. HDFS has powerful storage capacity, but does not provide a strong...
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HBase Application Development 04- Case Study
January 6, 2024
by 欒俊傑
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The differences between Hbase and RDBMS are as follows: Hbase cells (data items in each data record) are versioned. Rows are in order. Qualifiers can...
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What is Hadoop? What are the two main problems of “big data” it can solve?
January 6, 2024
by Roy Hughes
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In my previous work, I had the need to get in touch with big data. Although our system had a special big data department at...
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HBase Basic Commands
January 6, 2024
by Natalie Hale
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Create table 'TableName ',' ColumnFamily 'e.can 'chb_20181016', {LIMIT => 30, While the STARTROW = > '1010 a2. B1, B2-20100001 _2108_117 131.19.173 _',...
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How is the big data processing capacity refined?
January 5, 2024
by 袁佳穎
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When it comes to big data, you can't get around Google's troika. Back in 2003, Google published its first paper, The Google File System (GFS);...
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Use of WebView (1)
January 5, 2024
by Debra Macias
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package com.example.import android.app.import android.os.import android.webkit.super.setContentView(R.layout.webView = (WebView) findViewByI...
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Antivirus Guard (4) — Advanced tools
January 5, 2024
by Daniel Walters
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(1) Check update setting By changing the CheckBox state and then changing the corresponding key value pair in SharePreference, the check update is modified. private...
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HDFS Storage (00)
January 5, 2024
by Vanessa Copeland
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Namespace: Contains the hierarchy of file systems. Journaling: Protects consistency of data written to the file system. Changes to the file system are persisted to...
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Challenges and practices of building CEP engine based on Flink
January 5, 2024
by 李嘉玲
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As a network security company, CION Group specializes in providing enterprise-level network security technologies, products and services for government, enterprises, educational, financial and other institutions...
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Case study of Hadoop pseudo-distribution pattern
January 5, 2024
by 王雅玲
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Hadoop local operation mode of the case, today xiaobian combined with case operation to tell you about Hadoop pseudo-distribution mode. In fact, the pseudo-distribution mode...
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