Postgres-XC tutorial PDF - PGCon

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A1 What PostgresXC is and what it is not May 16th, 2012 PostgresXC 4
Summary (1) ● PostgreSQLbased database cluster ● Binary compatible applications – Many core extension ● Catches up latest PostgreSQL version ● – At present based upon PG 9.1. Soon will be upgraded to PG 9.2. Symmetric Cluster ● No master, no slave – Not just PostgreSQL replication. – Application can read/write to any server ● Consistent database view to all the transactions ● – Complete ACID property to all the transactions in the cluster Scales both for Write and Read May 16th, 2012 PostgresXC 5
Page 1 and 2: PGCon2012 Tutorial Configuring Writ
Page 3: Chapter A PostgresXC Introduction
Page 7 and 8: Symmetric Cluster (1) PostgreSQL re
Page 9 and 10: Read/Write Scalability DBT1 throu
Page 11 and 12: How to achieve R/W scalability Tabl
Page 13 and 14: Major Difference from PostgreSQL
Page 15 and 16: Summary ● ● Coordinator ● ●
Page 17 and 18: Difference from vanilla PostgreSQL
Page 19 and 20: How each component works Act as jus
Page 21 and 22: Chapter B Cluster design, navigatio
Page 23 and 24: General advice ● Avoid data mater
Page 25 and 26: Online transaction processing (OLTP
Page 27 and 28: B2 Code and binaries Code navigat
Page 29 and 30: Structure of code 2 ● Pooler -
Page 31 and 32: B3 Everything about configuration
Page 33 and 34: Configuration parameters ● ● Ba
Page 35 and 36: Node startup ● ● Coordinator/
Page 37 and 38: Demonstration psql client GTM Port
Page 39 and 40: CREATE TABLE extensions ● Control
Page 41 and 42: Point in time recovery PITR ●
Page 43 and 44: Chapter C Distributing data effecti
Page 45 and 46: Replicated Tables Writes Reads writ
Page 47 and 48: Querying replicated tables ● Exam
Page 49 and 50: Replicated tables - multirow oper
Page 51 and 52: Distributed Table ● ● ● Write
Page 53 and 54: Distributed tables - multirow ope
Page 55 and 56:
● JOINs Example: Join on distribu
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● Perfoming JOINs on datanodes Ex
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Shippability of Joins Hash/Module d
Page 61 and 62:
Choosing distribution strategy (1)
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Example DBT1 (1) ● author, item
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Example DBT1 (3) ● Shopping_car
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DBT1 scaleup ● Old data, we w
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Chapter D Backup, restore, recovery
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Example configuration (2) ● GTM
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General ● Coordinator and Datanod
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Cold backup of each database cluste
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Physical backup of each database cl
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Hot backup (2) ● ● ● ● Othe
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Hot backup - coord1 example ● Con
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GTM Hot Backup - GTM Sandby ● ●
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GTMStandby backs up ● GTM stand
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Restore from pg_dump and pg_dumpall
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Restore from the cold backup (2)
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Recovery.conf settings coord1 examp
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When coordinator or datanode crashe
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If GTM crashes ● ● ● ● ●
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Run GTM Proxies $ cat /home/koichi/
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Additional gtm_proxy options ● Ti
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Running GTMStandby ● Run GTM as
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HA General ● ● ● ● Postg
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Coordinator/datanode configuration
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Cleaningup outstanding 2PC ●
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Sites to know ● ● ● Main mana
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Documentation ● ● Published in
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Release policy and code merge May 1
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What next? ● First major release,
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Thank You Very Much! May 16th, 2012
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