hive books

Label:Hive is a Hadoop-based data Warehouse platform. With hive, we can easily work with ETL. Hive defines a SQL-like query language: HQL, which converts a user-written QL into a corresponding MapReduce program based on Hadoop execution. Hive is a data Warehouse framework that Facebook has just open source for August 2008, and its system targets are similar to pi

hive Data Model and storage In the last article, I've enumerated a simple example of hive operations, created a table test, and loaded the data into this table, which are similar to relational database operations, and we often compare hive with relational databases, precisely because hive many knowledge points and r

Hive time operation functionTags: hive function linux 2016-12-21 16:07 49 people read comments (0) Favorites Report Category: Hive Date function Unix Timestamp date function: From_unixtime syntax: From_unixtime (bigint unixtime[, string format]) return value: String Description: Converts a UNIX timestamp (the number of seconds from 1970-01-01 00:00:00 UTC to a sp

Tags: tools out get INF high available submit 1.2 executor codeSpark SQL often needs to access hive Metastore, andSpark SQL can get the Hive table's metadata through hive Metastore . Starting with Spark 1.4.0, spark SQL supports access to each version of Hive Metastore with a simple configuration. Note that spar SQL ig

Hive configuration MySQL MetastoreIn addition to saving real data in hive, there are additional data to describe the library, tables, and data, called hive metadata. Where are these metadata stored?If you do not modify the configuration hive defaults to using the built-in Derby database store metadata.Derby is a Java-b

Recently in doing some JS work, through the promotion of various great gods, sorting out 10 more classic JS books.As a scripting language, JS plays an indispensable role in web development. The launch of the HTML5, so that it is more fire added fire.How to learn JS this language, I put these 10 books into 4 levels, respectively, is the introduction, advanced, high-level, framework.Then you can choose the corresponding level of the book, to accumulate

recently came out 2 Oracle books, read the introduction, reference some evaluation, and read the demo chapter, feel good, worthy of recommendation. 's first book is: effective Oracle by-design by Thomas Kyte paperback:688 pages; Dimensions (in inches): 1.70 Publisher:mcgraw-hill Osborne Media; isbn:0072230657 This book is the work of a famous Oracle technology expert, Tom. Tom's last Masterpiece (Oracle expert advanced programming

Here are 10 nice Java books recommended on the Java inside. 1) Java Language specification, third Edition (by James Gosling) Written by the inventor of Java technology, this book is the authoritative technical guide for the Java TM programming language. This book is the best resource if you want to know the precise meaning of the language's structure. 2) effective Java, Second Edition (by Joshua Bloch)This book introduces 78 of the most useful rule

For children who are engaged in or are about to be engaged in Linux operations, learning books and video courses is indispensable, and of course the most important thing is to put it into practice. Today, we recommend some good books, hope to be helpful to everyone.Introductory book:"Bird's private Cuisine" (Basic article)"Bird's private Cuisine" (service article)"Linux command line and Shell Scripting Ency

Take a look at some of the jquery books in hand today and share them with you, including the basic jquery tutorial (learning jquery), the jquery combat (jquery in Action), and the sharp jquery.1.jQuery Combat (JQuery in Action)The book that the father of JQuery recommends, you can imagine. "This book surprises me ... This is an in-depth book, and the jquery project itself has benefited greatly from it. Believe it will be your ideal resource for learni

Recently, I want to buy a few books on. NET and design patterns, just csdn on the Dearbook on the next, finishing a few of these more classic books. Some of the English versions of the books cannot be found inside. The price refers to the non-VIP members of the prices, that is, ordinary members of the price.Microsoft. NET Framework Programming (revised edition) (

Before the invention of book-printing, it is very hard to make a copy of the book. All of the contents had to is re-written by hand from so called scribers. The scriber had been given a book and then several months he finished it copy. One of the most famous Scribers lived in the 15th century and his name is Xaverius endricus remius Ontius Xendrianus ( xerox). Anyway, the work was very annoying and boring. And the only way to speed it up is to hire more scribers. Once upon a time, ther

12 tips for easy survival in Apache Hive Learn to live with Apache Hive in 12 easy steps Hive allows you to use SQL on Hadoop, but optimizing SQL on a distributed system is different. Here are 12 tips that allow you to easily master Hive. Hive is not a relational database s

In this chapter we will explain why we need to use Hive view in the process of creating a cube in Kylin, and what is the benefit of using the hive view, what problems to solve, and the need to learn how to use the view, what restrictions are used in the view, and so on.1. Why you need to use a viewKylin uses hive's table data as the input source during cube creation. However, in some cases, table definition

The partition table created in hive has no complex partition type (range partition, list partition, hash partition, mixed partition, etc.). A partitioned column is also not an actual field in a table, but one or more pseudo-columns. This means that the information and data of the partition column are not actually saved in the data file of the table. The following statement creates a simple partition table: CREATE TABLE Partition_test (member_id stri

Abstract: Because Hive uses the SQL query Language HQL, it is easy to interpret hive as a database. In factStructurally, there is no similarity between Hive and the database, in addition to having a similar query language. This article willThe differences between Hive and database are explained in several ways. The dat

Hive was born to simplify the writing of the MapReduce program, and the people who did the data analysis with MapReduce knew that many of the analysis programs were essentially the same, except for the different business logic. In this case, a user programming interface such as Hive is required. Hive itself does not store and calculate data, it relies entirely on

Hive ive optimization essentials: When optimizing, the hive SQL as the map reduce program to read, there will be unexpected surprises.Understanding the core capabilities of Hadoop is fundamental to hive optimization. The long-term observation of Hadoop's process of data processing has several notable features:1. Not afraid of data, it is afraid of data tilt.2. Mo

Reprinted from: https://my.oschina.net/leejun2005/blog/280896Hadoop, as an open-source implementation of Mr, has been an advantage of dynamically running parsing file formats and getting loads that are several times faster than the MPP database. However, the MPP database community has also been criticizing Hadoop because the file format is not built for a specific purpose, so the cost of serialization and deserialization is too high.1. Introduction to Hadoop file formatThere are several types of

Recently used hive one months down (finally completed the first phase of data analysis migration work), then used the 0.8 version (now the latest version is 0.8.1), one months to harvest a lot. From the installation environment, Commissioning, development, business understanding, technical research, business implementation, one by one have experienced a. Overall, in addition to the current online introduction of the regular