hive active

Directory structure: Hadoop cluster (CDH4) practices (0) preface Hadoop cluster (CDH4) Practices (1) Hadoop (HDFS) Build Hadoop cluster (CDH4) practices (2) build Hadoop cluster (CDH4) using HBaseZookeeper (3) Build Hadoop cluster (CHD4) using Hive (4) Build Hadoop cluster (CHD4) using Oozie (5) Sqoop Security Directory structure: Hadoop cluster (CDH4) practices (0) preface Hadoop cluster (CDH4) Practices (1) Hadoop (HDFS) Build Hadoop cluster (CDH4)

Here we will not discuss how to use hive. According to the introduction in this document, hive registries are divided into three types: boot hive, system HV, and user hive. Boot hive refers to the registry information that needs to be used in the boot process. This part cann

Ambari Hive cannot be properly queried 1. An error occurred today. After connecting to hive, no command can be executed. $ Beeline-u "jdbc: hive2: // hostname.domain.cn: 10000/default; principal = hive/_ HOST@domain.com ;"Connecting to jdbc: hive2: // hostname.domain.cn: 10000/default; principal = hive/_ HOST@domain.co

some summarization on the optimization of hive performance Note that this article 90% from this article: Hive performance optimization, very grateful to the author of the careful collation, some of which I have done supplements and additions, if there is anything wrong to write, please leave a message, thank you Preface Today, the phone interview was suddenly involved in the

Hive is a Hadoop-based data warehouse platform. Hive provides SQL-like query languages. Hive data is stored in HDFS. Generally, user-submitted queries are converted into MapReduce jobs by Hive and submitted to Hadoop for running. We started from Hive installation and gradual

0. Installation environment and versionUbuntu16,Hadoop version is 2.7.2, choose Hive version to hive-2.1.171. Hive installation package DownloadAddress: https://mirrors.tuna.tsinghua.edu.cn/apache/hive/2. Unzip after uploading to the serversudo mv apache-hive-2.1.1-bin.tar.g

Install the data warehouse tool in two Hive modes to convert the raw structured data under Hadoop into tables in Hive. HiveQL, a language almost identical to SQL, supports updates, indexes, and transactions. It can be seen as a er from SQL to Map-Reduce. Provides interfaces such as shell, JDBCODBC, thrift, and Web. I. Embedded Mode Install the data warehouse tool in two

1.1 Installation1.Hive relies on the Hadoop environment, all installed before installing hadoop,hive generally installed on the Namenode node of Hadoop;2. Download hive latest release version (0.7.1) http://www.apache.org/dyn/closer.cgi/hive/3. Extract the compressed installation package to a directory, such as/home/ha

6.1 SELECT ... From statementhive> SELECT name,salary from employees;--General Queryhive>select e.name, e.salary from Employees e;--alias query is also supported when a user selects a column that is a collection data type, Hive uses JSON syntax to apply to the output:hive> SELECT name,subordinates from employees;Display of the array type of John Doe ["Mary Smith", "Todd Jones"]hive>select name,deductions fr

privileges in hive_metadata.* to ' hive ' @ ' percent ' identified by ' hive ';Query OK, 0 rows Affected (0.00 sec)Mysql> Grant all privileges in hive_metadata.* to ' hive ' @ ' localhost ' identified by ' hive ';Query OK, 0 rows Affected (0.00 sec)Mysql> Grant all privileges in hive_metadata.* to '

This document describes how to manually install the clouderaHivecdh4.2.0 cluster. For environment setup and Hadoop and HBase installation processes, see the previous article. Install hivehive on desktop1. Note that hive saves metadata using the derby database by default. Replace it with postgresql here. The following describes how to install postgresql and copy postg. This document describes how to manually install the cloudera

Today I am mainly in this hive, read the book in the morning, the beginning a bit messy, the back slowly found that hive is actually quite simple, to my understanding is and database related things, then this is easier for me, because I am more familiar with SQL syntax, and this is HQL, In fact, many are similar. Let's take a look at Hive's basic introduction:First, Hiv