MongoDB 3.0 introduces a list of unique new features like compression, document level locking, DB side cache management which can help to accelerate your applications in most of the use-cases. Once you decide to go ahead, there is only a very small step to migrate and happily take the benefits. Too good to be true? The session will cover how migration works in theory and in practice, how to make it smooth without downtime and disturbance in the force. We will describe where we have seen the biggest change in the behaviour of the engine, and how the new features worked out for us along with the few caveats we identified so far. The goal of the session is to provide you all the means to plan and execute your MongoDB upgrade.

1. Better, Faster, Stronger!
Migration to 3.0
©2015AmadeusITGroupSA
Upgrade MongoDB in the
enterprise environment
Attila Tozser, Amadeus Data
Processing GmbH, MongoDB Days
Germany, 20/10/2015

2. Amadeus IT Group
1
©2015AmadeusITGroupSA

3. Amadeus is a technology company dedicated to the
global travel industry.
We are present in 195 countries
with a worldwide team of more than 13,200 people.
Our solutions help improve the
business performance
of travel agencies, corporations, airlines,
airports, hotels, railways and more.
_ Introduction1Amadeus in a few words
©2015AmadeusITGroupSA

4. Our solutions facilitate journeys and enrich the travel
experience for hundreds of millions of people every year.
to shape the
future of travel
_ Introduction1
We are working together with
our customers and partners
We have a clear purpose
©2015AmadeusITGroupSA

5. Page 5
A history of shaping the future of travel _ Amadeus history2
1987
Amadeus
is founded
1995
World leader
in number of
travel agency
locations
1998
1 MILLION
bookings made on
a single day for
the first time
2010
Amadeus diversifies
into IT for hotel, rail
and airport
1992
First booking
made through
Amadeus
1996
e-Commerce
division launched
2000
Partnership with
BA and Qantas to
launch Amadeus
Altéa – our core
Airline IT offering
2014
Contracts with Ryanair
and Southwest Airlines
and a strategic
technology
relationship with IHG
©2015AmadeusITGroupSA

6. Page 6
_ Amadeus today3Robust global operations
©2015AmadeusITGroupSA
1.6+
billion
data requests
processed per day
526
million
travel agency
bookings
processed in 2014
695
million
Passengers
Boarded (PBs)
in 2014
95%
of the world’s
scheduled
network airline
seats

7. Page 7
Close to our customers
©2015AmadeusITGroupSA

8. Page 8
A global team of 13,200+ professionals
_ 118 nationalities
_ Cultural diversity
_ Clear focus on recruiting
and developing talent
_ Values based culture

9. MongoDB at Amadeus
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©2015AmadeusITGroupSA

10. Page 10
Business needs
Gathered from customers
user-friendly way to query any data
in our main operational databases
_ Unpredictable ad-hoc search
_ Many advanced reporting requirements
A way to store orders of magnitude more different data
from various sources, but still maintain low latency
Sustain Organic growth of data and throughput (time-to-time
2X or more a year) without degradation

11. Page 11
Runs on standard x86 architecture
C++, Python & Java drivers
Enterprise-grade security
_ SSL encryption
_ Kerberos authentication
_ Data-at-rest encryption
MongoDB is perfect match to
our needs
Integration
In the Amadeus standards

12. New features in MongoDB 3.0
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©2015AmadeusITGroupSA

13. ©2015AmadeusITGroupSA

14. ©2015AmadeusITGroupSA
WiredTiger our observations
• Compression ratio 3x-10x
• IO characteristic tunable
• Better latency
• Enhanced security

15. ©2015AmadeusITGroupSA
In-memory our observations
• On OOM instant crash
• Sustained 150K/4KB IOPS
On a single box
• 1-6ms latency

16. Upgrade MongoDB in the enterprise
environment
2
©2015AmadeusITGroupSA

17. ©2015AmadeusITGroupSA
AmadeusClients

18. ©2015AmadeusITGroupSA
S
S
S
S
S
S
Application servers MongoDB

19. ©2015AmadeusITGroupSA
S
S
S
S
S
S
Database sever:
Operating System
MongoDB binaries
Misc. processes:
Ops manager agents
Monitoring code
Automation code

20. ©2015AmadeusITGroupSA
S
S
S
S
S
S
This appserver consist of
• Operating System
• Application code
• MongoDB driver
• Mongos binary

21. ©2015AmadeusITGroupSA
MongoDB
Cluster
MMS/Ops
Manager

22. ©2015AmadeusITGroupSA
MongoDB
Cluster
MMS/Ops
Manager
_Always Sharded and
replicated
_Over 10 test levels
_Monitoring
_Backup
_(automation)
Mongodb 3.0 needs Ops Manager > 1.6.0

23. Upgrading MMS3
©2015AmadeusITGroupSA
MMS
application
database
Backup
Database
Backup
Database
Backup
Database
MMS App Server MMS App Server MMS App Server
Backup Daemon
Backup Daemon
Backup Daemon
Backup
agents
Monitoring
agents
Automation
agents

24. Upgrading MMS3
©2015AmadeusITGroupSA
MMS
application
database
Backup
Database
Backup
Database
Backup
Database
MMS App Server MMS App Server MMS App Server
Backup Daemon
Backup Daemon
Backup Daemon
Backup
agents
Monitoring
agents
Automation
agents
Upgrade separately as any
other MongoDB cluster
3.0 only from MMS 1.6
The MMS server process contains the new versions
Should be on the same version: Upgrade together

25. Upgrading MMS3
©2015AmadeusITGroupSA
MMS App Server
REST API
Corporate Monitoring
API calls
Metrics
Corporate Automation
API calls
Config options

26. Upgrading MMS3
©2015AmadeusITGroupSA
MMS App Server
REST API
Corporate Monitoring
API calls
Metrics
Corporate Automation
API calls
Config options
Test the changes of the API to avoid
bad surprises

27. ©2015AmadeusITGroupSA
S
S
S
S
S
S
http://docs.mongodb.org/manual/release-notes/3.0-upgrade/
_Upgrade MongoDB
_Be prepared for fallback funnies
_Backup, MONGODB-CR auth
_Lucky case: Give a try to Ops Manager
automation
_Less lucky case: Do it by hand
_Start from a 2.6 installation

28. Upgrading MMS3
©2015AmadeusITGroupSA
S
Upgrade the Mongos processes
Config 1 Config 2 Config 3
S, 3.xUpgrade cluster metadata

29. Upgrading MMS3
©2015AmadeusITGroupSA
S
Upgrade the Mongos processes
Config 1 Config 2 Config 3
S, 3.x
Upgrade all the mongos processes

30. Upgrading MMS3
©2015AmadeusITGroupSA
S
Upgrade the Mongos processes
Config 1 Config 2 Config 3
S, 3.x
Upgrade config

31. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Install
binaries
Install
binaries
Install
binaries
Secondary
MMAPv1
2.6

32. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0

33. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0
Secondary
MMAP v1
2.6

34. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0
Primary
WT 3.0
Secondary
WT 3.0
Secondary
WT 3.0

35. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0
Secondary
MMAPv1
2.6
Primary
WT 3.0

36. 3
©2015AmadeusITGroupSA
Primary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0
Primary
WT 3.0
Secondary
WT 3.0
Secondary
MMAPv1
2.6
Secondary
WT 3.0

37. 3
©2015AmadeusITGroupSA
Secondary
MMAP v1
2.6
Secondary
MMAP v1
2.6
Upgrade the Shards
Secondary
WT 3.0
Primary
WT 3.0
Secondary
WT 3.0

38. Look into the future
3
©2015AmadeusITGroupSA

39. 3
©2015AmadeusITGroupSA
MY MongoDB wishlist
_ Cross cluster replication
_ Filtered / delayed / batched
_ Multimaster (AP operation)
_ Multithreaded queries
_ Transactions
_ On multi update

40. Divider title here
1
©2015AmadeusITGroupSA
Thank you!
Questions?