Original reprint address: https://www.cnblogs.com/zhang-ke/p/9009531.html
This article is based on greenplus 5.7, greenplus-cc-web4.0 installation.
1, Install the database monitored by greenplus and create users (install under gpadmin user)
1. Open the greenplus database
[gpadmin@master ~]$ gpstart -a
2. Ins ...
Posted on Sun, 05 Jan 2020 14:59:23 -0500 by rodolp13
Greenplum has iterated several small versions at present in version 6. With the update of the version, bug s are constantly fixed.
Friends who are going to try it can start. As the first post of the first working day of the new year, it must start from the "groundbreaking" 6.0. The following content is relatively simple, suitable for ...
Posted on Fri, 03 Jan 2020 11:01:52 -0500 by freddyatlantis
PostgreSQL, Greenplum, wide table, relationship, loop, performance
In GPDB, do you use relational storage or large wide tables?
Relational storage, when querying the contents of other tables, needs JOIN completion. JOIN may need to redistribute data. Dimension tables can solve the problem of redistributing a large number of ...
Posted on Thu, 21 Nov 2019 13:10:03 -0500 by catnip_uk
Labels (space delimited): GreenPlum
In the process of configuring GreenPlum, you need to pay attention to the following points:
Find the installation package
Installation dependency, Gun version needs attention
Detailed installation procedure reference Greenplum installation introduction
I am a computer virtual machine insta ...
Posted on Sun, 10 Nov 2019 14:42:13 -0500 by antisback
11. Backup and Recovery
This chapter describes backup and recovery of database and user data in GPDB system.
GP recommends backing up the database regularly. Backup can be used to restore and rebuild the GPDB system in case of system failure or data corruption. In addition, you can use backup to migrate GPDB data from one system to another.
Posted on Sat, 22 Jun 2019 14:37:45 -0400 by lrsdsout
If you want to be a qualified database administrator, you should first have solid basic knowledge and problem-solving ability. Referring to Pivotal's official FAQ, this article answers some common questions that are often encountered in the use and management of Deepgreen & Greenplum. I hope it will be helpful to you. If you have more quest ...
Posted on Mon, 17 Jun 2019 21:02:58 -0400 by girlzz
Introduction to MADlibMADlib is an open source machine learning library cooperated by Pivotal and the University of Berkeley. It provides precise data parallel implementation, statistics and machine learning methods to analyze structured and unstructured data. The main purpose is to expand the analytical capability of the database, which can be ...
Posted on Mon, 17 Jun 2019 20:57:48 -0400 by djg_uk
If you want to be a qualified database administrator, you must first have solid basic knowledge and problem handling ability.Referring to Pivotal's official FAQ, this paper provides ideas/answers to common problems encountered in the management of Deepgreen & Greenplum.I hope it will help you. If you have more questions to share with your ...
Posted on Mon, 17 Jun 2019 13:21:50 -0400 by nickman013
This document parses the contents of postmaster.opts and postmaster.pid files under the Greenplum directory, which are slightly different from PostgreSQL.Let's look at an example of a Master node:
[root@cdha ~]# cd /data/master/gpseg-1/
[root@cdha gpseg-1]# ll
drwx------ 8 gpadmin gpadmin 4096 Jun 26 16:44 base
drwx------ 2 gpadmin ...
Posted on Thu, 14 Feb 2019 03:15:19 -0500 by bb_sarkar
PostgreSQL , Greenplum , hash outer join , hash table
Hash JOIN is a better way to speed up data analysis, large table JOIN and multi-table JOIN.
hash join scans one of the tables (including fields that need to be output) and generates a hash table based on the JOIN column. Then scan another table.
Introduction to hash joi ...
Posted on Fri, 08 Feb 2019 21:09:19 -0500 by bios