The Four V’s of Big Data Testing: Variety, Volume, Velocity, and Veracity

T13 Big Data 10/6/16 13:30

The Four V's of Big Data Testing: Variety,Volume, Velocity, and Veracity

Presented by:

Jaya Bhagavathi Bhallamudi

Tata Consultancy Services

Brought to you by:

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Jaya Bhagavathi Bhallamudi A senior consultant in the assurance services unit of Tata Consultancy Services, Jaya Bhagavathi Bhallamudi heads the Big Data and Analytics Assurance Center of Excellence, which focuses on R&D, test process definitions, test automation solution development, and competency development on Big Data technologies. Jaya has been in the test automation, testing services, and solutions innovation space for fifteen of her seventeen years in IT. She enjoys building test automation frameworks and accelerators for various testing services. Contact Jaya at [email protected] or on LinkedIn.

1 | Copyright © 2016 Tata Consultancy Services Limited

The Four V’s of Big Data Testing: Variety, Volume, Velocity & Veracity

October 6, 2016 TCS Confidential | Copyright © 2016 Tata Consultancy Services Limited

Jayabhagavathi Bhallamudi – Head, Big Data COE, TCS

2

With you today…

• Jaya is a Senior Consultant in TCS and currently heading the Big Data and Analytics Assurance Center of Excellence, which focuses on the R&D, Test Process definitions, Test Automation solution development and Competency development

• Jaya has 18+ years of experience in IT industry with 15+ years in Test Automation and Testing Services & Solutions Innovation

• Jaya holds Masters degree in Computer Application from Osmania University, Hyderabad, India

Jayabhagavathi Bhallamudi, Head – Big Data Testing COE, Assurance Services, TCS

TCS Confidential Information – Not to be shared

3

Today we will cover…

TCS Confidential

1

Tester’s Dilemma 2

Framework to tackle the problem

Need for Big Data Assurance

3

4

BIG DATA

BIGGER DILLEMA

NEED FOR BIG DATA

ASSURANCE

5

Big Data Analytics


Non-traditional internal data &

uncontrolled external data

Complex non-traditional

analytical models

INPUT OUTPUT

6

Garbage in equals Garbage out


IN OUT

Increased Risk

=

7

How this impacts your business


Bad Data

Wrong Insights

Business / Brand Image Losses

Incorrect Processing

8

Appropriate Big Data Assurance ensures


Good Data

Relevant Actionable Insights

Business Growth

Reliable Processing

9

BIG DATA

BIGGER DILLEMA

TESTER’S DILEMMA

10

Scope in terms of data flow

Ingestion

Integration

Migration

Homogenization

Standardization

Storage

Analytics

Apps Insights

Transformed

Data Raw Data


11

VERACITY

Focus in terms of V’s

VALUE


VELOCITY

VOLUME

VARIETY

VARIABILITY

BIG

DATA

TBs

RDBMS, txt,

xml, json,

bson, orc, rc…

Inconsistency

Reliability

Relevancy

Performance

12 TCS Confidential Information – Not to be shared

Ingestion

Integration

Migration

Homogenization

Standardization

Storage

Analytics

Apps Insights

When to focus which ‘V’?

Or .. Should we focus on all V’s all the time?

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A FRAMEWORK

TO TACKLE

THE PROBLEM

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Understand the architecture of the integrated data enterprise 1


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Hadoop

Non-Hadoop

Databases Files Near real-time data streams

HDFS ( Raw data )

HIVE / HBASE ( Standardized data )

HIVE / HBASE

( Data for creating

analytical models )

HIVE / HBASE

( Data for applying

analytical models )

Step 1: Understand the architecture

DWHs

Apps

Analy

tics

Analytics


16 TCS Confidential Information – Not to be shared

Identify the testing interfaces 2

17

Hadoop

Non-Hadoop

Databases Files Near real-time data streams

HDFS ( Raw data )

HIVE / HBASE ( Standardized data )

HIVE / HBASE

( Data for creating

analytical models )

HIVE / HBASE

( Data for applying

analytical models )

Step 2: Identify testing interfaces

DWHs

Apps

Analy

tics

Analytics


a b c

d

f h

e

g i

j

k

m

l

n

18

Identify testing type relevant to the interface 3


19

Databases

HDFS ( Raw data )

Data ingestion testing

Data migration testing

Data integration testing Te

sting types @

Step 3: Identify testing type

a

a


20

Files

HDFS ( Raw data )


Data migration testing

Data integration testing Te

sting types @


b

b


21

Near real-

time data

streams

HDFS ( Raw data )


Data integration testing

Te

sting types @


c

c


22

HDFS

(Raw data)

HIVE / HBASE

(Standardized data)

Data homogenization

testing

Te

sting types @


d

d


23

HIVE / HBASE

(Standardized data) Data standardized testing

Te

sting types @


e


e

24

HIVE / HBASE

(Standardized data) Data migration testing

Te

sting types @


f


HIVE / HBASE

(Data for creating

analytical models)


f

25

HIVE / HBASE

(Data for creating

analytical models) Analytical model validation

Te

sting types @


g


g

26

HIVE / HBASE

(Standardized data) Data migration testing

Te

sting types @


h


HIVE / HBASE

(Data for applying

analytical models)


h

27

HIVE / HBASE

(Data for applying

analytical models)

Analytical model

effectiveness testing

Te

sting types @


i


i

28

Ha

doo

p

HIVE / HBASE

(Data for applying

analytical models)

Data provision

testing

T

esting types @



Ana

lytics

j

j

k

l

Apps

Analytics k

l

29

Hadoop

HIVE / HBASE

(Data for applying

analytical models)

Data migration

testing

T

esting types @



k

DWHs k

Data ingestion

testing

Data

integration

30

Te

sting T

ypes @

n

Data Provisioning Testing


DWHs

Apps

Analytics n

o

o


31

Identify the V to be prioritized for the testing type

4


32

Step 4: Prioritize V’s 4

Data Ingestion Testing

VARIETY

VELOCITY

High priority for file-based data ingestions

High priority for real time data ingestions


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Data Migration Testing

VOLUME High priority for historical data migrations


34


Data Integration Testing

VARIABILITY Inconsistency / non-compliance checks


High priority for data acquired from multiple sources to a single target

High priority for data acquired from external sources like social media

35


Data Homogenization Testing

VARIETY High priority for unstructured or semi-structured to

structured data format conversions


36


Data Standardization Testing

VOLUME High priority for any pre-existing data to be checked for

conformance to data standards & industry compliances


37


Analytical Model Validation

VOLUME To identify data patterns which were not considered in

development of model; Entire historical data to be

considered for testing


Analytical models based on historical data

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Analytical Model Validation

VERACITY

VALUE

High priority to identify the data patterns

that are not relevant for the business

High priority to identify the data patterns

that do not bring any value to the business


Analytical models not based on historical data

39


Analytical Model Effectiveness Testing

VOLUME High priority to identify wrong predictions, unidentified data patterns


If the actual data, on which the model needs to be run, is available

40

Thank you!

For more information, please write to me at [email protected]

Visit TCS at booth # 1

The Four V’s of Big Data Testing: Variety, Volume, Velocity, and Veracity

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