Programmer Help

1, Sub account creation, AK information binding If you are the first time to log in to digital plus platform and use DataWorks with a sub account, you need to confirm the following information: • the business alias of the primary account to which the sub account belongs. • user name and password of the sub account. • AccessKey ID ...

Download and extract to the specified directory (1) Configure environment variable / etc/profile export HIVE_HOME=/usr/local/hive/ export PATH=$PATH:$HIVE_HOME/bin (2) Modify hive configuration file hive-env.sh Add hadoop path, hive path, lib path of hive #HADOOP_HOME=${bin}/../../hadoop HADOOP_HOME=/usr/local/hadoop ...

1. Two ways to build Hadoop 1.1: the earliest installation of hadoop is the version released by the native apache. You need to download hdfs,hive,mapreduce, zookeeper and mysql from the apache official website. Each component needs to be installed separately, and the version of the component needs to be consistent, and many settings need to be ...

1. File loading Hive table Syntax: LOAD DATA [LOCAL] INPATH 'filepath' [OVERWRITE] INTO TABLE tablename [PARTITION (partcol1=val1, partcol2=val2 ...)] Example: # Create partition table create table tb_load_data( id int, name string, hobby array<string>, add map<String,string> ) partitioned by(part_tag1 strin ...

Alibaba Tencent cloud hadoop+spark cluster construction (2) linux version: centos7 hadoop version: 3.1.1 spark version: 2.3.2 hadoop has been set up in 1, and then spark. For convenience, use shell script to download spark and hive (later, run spark first). download_file.sh ------------------------------- #!/bin/bash TARGET=f ...

1. jg is divided into node table and edge table. Nodes have their own jid and related attribute fields. This jid is globally unique, and the jid of each node is different 2. The edge table will save two JIDS, one is the start node and the other is the end node, including the related attribute information of the edge 3. Becaus ...

Install and configure mysql Install and configure hive One mysql installation configuration I. Mysql installation 1. Install mysql command: Yum install MySQL server - y (- y parameter is the default yes for all places where you need to enter yes) 2. Open mysql service: service mysqld start 3. Set the mysql service to start a ...

1. Download Hive installation package: Download on official website: http://hive.apache.org/downloads.html 2. Upload Hive's tar package and extract it:Suggestions and hadoop directory at the first level, convenient for subsequent use; Unzip: tar -zxvf apache-hive-1.2.1-bin.tar.gz -C /home/hadoop/hive Modify the name of the extracted file: mv a ...

In part 3 of this blog series, I will still focus on Query Plan and Execution Summary, but will use real data( Kaggle's Flights Delay database ), to perform a more complex query. There are three tables in the test database: flights.csv airlines.csv airports.csv The query statement is as follows: SELECT a.airline as airline_name, COU ...

hive is a data warehouse tool based on Hadoop, which can map structured data files into a database table, and can convert SQL statements into MapReduce tasks to run. Its advantage is that it can quickly implement simple MapReduce statistics through SQL like statements. Install hive 1. Download and extract hive source program ...