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Migrating Uber from MySQL to PostgreSQL

uber_migration_pypgday_2013

Migrating Uber from MySQL to

Migrating Uber from MySQL to PostgreSQL Evan Klitzke Uber, Inc. March 13, 2013 Evan Klitzke (Uber, Inc.) Migrating Uber from MySQL to PostgreSQL March 13, 2013 1 / 59

Page 2 and 3: Outline 1 Background 2 Code Changes
Page 4 and 5: Background Background (cont.) All o
Page 6 and 7: Obstacles Background Minimizing dow
Page 8 and 9: Work Distribution Background The wo
Page 10 and 11: Background “Replication” Plan T
Page 12 and 13: Background Serialization Problem T
Page 14 and 15: Downtime Plan Background The altern
Page 16 and 17: Conversion Background Initial attem
Page 18 and 19: Background MySQLisms (escaping) Tab
Page 20 and 21: Background MySQLisms (booleans) In
Page 22 and 23: Attempt 1 Background Lesson learned
Page 24 and 25: XML Attempt Background Web develope
Page 26 and 27: XML Attempt Background Another nice
Page 28 and 29: XML Attempt Background Except a few
Page 30 and 31: XML Attempt Background Solution: I
Page 32 and 33: Outline 1 Background 2 Code Changes
Page 34 and 35: Major Errors Code Changes Most prob
Page 36 and 37: Truncation Code Changes In MySQL, o
Page 38 and 39: Code Changes Missing Required Value
Page 40 and 41: Implicit Ordering Code Changes In M
Page 42 and 43: Code Changes Implicit Ordering (con
Page 44 and 45: Code Changes Implicit Ordering (con
Page 46 and 47: GROUP BY Code Changes In MySQL you
Page 48 and 49: Case Sensitivity Code Changes By de
Page 50 and 51: Case Sensitivity Code Changes My ad
Page 52 and 53:
Outline 1 Background 2 Code Changes
Page 54 and 55:
Downtime Plan The Actual Migration
Page 56 and 57:
The Problem The Actual Migration Du
Page 58 and 59:
The Actual Migration The Second Att

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