HBase data migration - cross-network migration from physical server room clusters to EMR clusters

During the design of data migration schemes, the following steps are followed if the HBase and Hadoop versions are inconsistent data in HBase to ensure data consistency after migration. 2. The two clusters must both be configured with internet IP ...
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How can we store GPS data efficiently?

How can we store GPS data efficiently? Mobile devices have become quite popular in recent years and the use of GPS is also increasingly common. You can see GPS technology applied in functions like real-time location and historical location data in taxi ...
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Challenges for OLAP in the Big Data Era

Value of data Before talking about specific technologies, first let’s think about why we need OLAP? What’s its can’t answer these questions, it is a big problem, as it indicates data quality is unacceptable. Massive data with poor ...
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Solution of high CPU usage of Alibaba Cloud RDS SQL Server - data type conversion

fragmentation. The third article of this series will discuss the implicit conversion of data types. Analysis of scenarios In SQL Server, the data types at both ends of the comparison operator (greater than, smaller than, equal to, or connect) must be ...
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A Simple Tutorial on Alibaba Cloud RDS Usage

This tutorial uses RDS for MySQL as an example. The procedure for RDS for MS SQL is similar. In this example, the data for migration and import is a forum named DiscuzX and the tool is Navicat for MySQL. Purchasing It is very easy to buy an RDS ...
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Customize data partitions for log shipping to OSS to optimize your computing

Data partitioning OSS features high reliability and a low cost and is ranked as one of the best options for massive data or other computing engines) to load data for query analysis in the schema-on-read approach. It is a common practice to specify ...
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Changyou: Best practices of game O&M

too old to enable the application to pull data from the cloud. However, applications for new versions of operating systems databases and applications were placed on one or two machines for interaction, and data consistency and file integrity may have ...
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Difference between PostgreSQL and Oracle--Functions

migration from Oracle to PostgreSQL databases. For data migration between databases, data is first migrated, followed by the SQL, otherwise it will report errors. In data migration, A || B of Oracle can be converted into coalesce (A, ‘&rsquo ...
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Cloud computing, do you use it in a correct way

Explosive growth of cloud computing First, let's look at a group of data: the financial report of Alibaba Group showed for the first quarter of 2016, with year-on-year growth of 175%. This group of data above may reflect the current IT market ...
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On JavaScript security

cookie theft. However, data leakage is hard to prevent. For example, if ISV develops a report system for a Taobao seller to analyze the sales data, it is easy to understand that ISV can send the data to their own server by a JS HTTP request for the open ...
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[Reference architecture] On-demand video streaming

of on-cloud video streaming business. In addition, the traditional IT environment is hard to be scaled with a high migration OSS provides the massive file storage service and features data reliability up to 99.99999999%. It also provides local hot backup ...
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Introduction of Redis cluster's support of select command through Proxy

and migration. • Redis-proxy: single-threaded, with a kernel in the C++14 language. The data link diagram is shown below ...
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Mongodump archive mode principles

For archive output, Mongodump blends the data in various sets and puts them in one output file. This features two advantages goroutines are used. We need to pay attention to two types of goroutines: one is the backup goroutine of dump data (with the ...
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Evolution of image server architectures

data files accumulate beyond a certain level, also introducing latency issues. The development phase https://intl.aliyun.com caching methods. When the volume of file data is very high, file systems provide poor performance and caching methods like Squid and ...
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[Weex Tips] Intelligent use of Weex lifecycle

; module.exports = { data: {}, methods: {}, init: function () { console.log(’Triggered after;Triggered after data binding and before template compilation’); }, ready: function () { console.log ...
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About ApsaraDB for Redis solution for gaming industry

industry. Next I will introduce the features of ApsaraDB for Redis targeting the gaming industry. 1. Data persistence to ensure high reliability of data Traditional database architecture usually adopts relational databases to store data (such as MySQL ...
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How to optimize website access speed

Hangzhou, the access from Hangzhou only takes 2ms, but the access from Qingdao takes 23ms. The response time from the data arriving return data of the same size as the pinged data, so that we can easily judge the communication state with the server. So if ...
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Seven things you have to know about RDS

rollback risks RDS supports data rollback, but only for the entire instance, not a single table or database. It is important to make backups of crucial data before the rollback to prevent data loss. Creating a temporary instance is recommended for rolling ...
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Exploring FastCGI protocol and its implementation in PHP

Analysis on traditional CGI principle After the client accesses a URL, the data is committed by GET/POST/PUT, and a request is;); if (query_string == NULL) { printf("no input data"); } else if (sscanf ...
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Play among clouds (I): elastic expansion

similar underlying technologies. But the domestic constraining policies on data centers and networks also contribute to the various are different zones or servers, only data varies. Currently, the most common practice is to utilize load balancing devices to ...
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