Introduction to Hortonworks Data Flow powered by Apache NiFi.

1. HDF Powered by Apache NiFi
Intro
Milind Pandit
Solutions Engineer

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Agenda HDF 2.0: Flow Management
– NiFi basics
– NiFi use cases
– NiFi demos

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Simplistic View of Enterprise Data Flow
Data Flow
Process and Analyze
Data
Acquire Data
Store Data

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Interacting with different business partners and customers
Realistic View of Enterprise Data Flow

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Connected Data Platforms

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Stream Processing
Flow Management
Enterprise Services
At the edge
Security
Visualization
On premises In the cloud
Registries/Catalogs Governance (Security/Compliance) Operations
HDF 2.0 – Data in Motion Platform

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Hortonworks DataFlow (HDF)
 Constrained
 High-latency
 Localized context
 Hybrid – cloud/on-premises
 Low-latency
 Global context
SOURCES
REGIONAL
INFRASTRUCTURE
CORE
INFRASTRUCTURE

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• For agile and immediate creation, configuration, control of dataflowsVisual Command and Control
• Ensures trust of your dataData Lineage (Provenance)
• Because not all data is of equal importanceData Prioritization
• Since not all senders/receivers/connections work perfectly all the timeData Buffering/Back-Pressure
• Adapt to different situations with different requirementsControl Latency vs Throughput
• Security of data, and data accessSecure Control Plane/Data Plane
• ScalabilityScale out Clustering
• Ecosystem flexibility and growthExtensibility
Apache NiFi: Designed for 8 challenges of global enterprise dataflow

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Apache NiFi: Three key concepts
• Manage the flow of information
• Data Provenance
• Secure the control plane and data plane

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Apache NiFi – Key Features
• Guaranteed delivery
• Data buffering
- Backpressure
- Pressure release
• Prioritized queuing
• Flow specific QoS
- Latency vs. throughput
- Loss tolerance
• Data provenance
• Recovery/recording
a rolling log of fine-grained
history
• Visual command and control
• Flow templates
• Pluggable/multi-role security
• Designed for extension
• Clustering

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Common Apache NiFi Use Cases
Predictive Analytics
Ensure the highest value data is captured and available for analysis
Compliance
Gain full transparency into provenance and flow of data
IoT Optimization
Secure, Prioritize, Enrich and Trace data at the edge
Fraud Detection
Move sales transaction data in real time to analyze on demand
Big Data Ingest
Easily and efficiently ingest data into Hadoop
Value Resources
Gain visibility into how data sources are used to determine value

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What is Apache NiFi used for?
• Reliable and secure transfer of data between systems
• Delivery of data from sources to analytic platforms
• Enrichment and preparation of data:
– Conversion between formats
– Extraction/Parsing
– Routing decisions
What is Apache NiFi NOT used for?
• Distributed Computation
• Complex Event Processing
• Joins / Complex Rolling Window Operations
Use Cases for Apache NiFi

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FlowFile
• Unit of data moving through the system
• Content + Attributes (key/value pairs)
Processor
• Performs the work, can access FlowFiles
Connection
• Links between processors
• Queues that can be dynamically prioritized
Terminology

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HTTP Data FlowFile
HTTP/1.1 200 OK
Date: Sun, 10 Oct 2010 23:26:07 GMT
Server: Apache/2.2.8 (CentOS) OpenSSL/0.9.8g
Last-Modified: Sun, 26 Sep 2010 22:04:35 GMT
Content-Type: text/html
Hello world XXXXXXXXXXXXXXXXXXXXXXXXXXXX
Key: 'entryDate’ Value: 'Fri Jun 17 17:15:04 EDT 2016'
Key: 'fileSize’ Value: '23609'
Key: 'filename’ Value: '15650246997242'
Key: 'path’ Value: './’
0101010101110101010101010101 (Binary)
Header
Content
Analogy: FlowFiles are like HTTP Data

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1. Drag and drop processors to build a flow
2. Start, stop, and configure components in real time
3. View errors and corresponding error messages
4. View statistics and health of data flow
5. Create templates of common processor & connections
Create, Run, View, Start, Stop, Change, Fix, Dataflows in Real-Time

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Apache NiFi Demo: Tail Logs, Route on Content, Buffer in Kafka,
Deliver to HDFS

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What is Data Provenance and Why is it Important?
BEGIN
END
LINEAGE
IT and Cloud Operators
• Understand traceability, lineage
• Enable recovery and replay
Compliance Regulations
• Provide an audit trail
• Remediation capabilities

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Provenance Enables Easy Access and Traceability of Changes

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Need Fine-Grained Security and Compliance?
Security
• Secured authentication
• Enterprise authorization services –
entitlements change often
• Encrypted content, encrypted
communications
• People and systems with different roles
require difference access levels
• Tagged/classified data

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Repositories - Pass by reference

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Repositories – Copy on Write

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NiFi Architecture

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Edge Intelligence with Apache MiNiFi
 Guaranteed delivery
 Data buffering
‒ Backpressure
‒ Pressure release
 Prioritized queuing
 Flow specific QoS
‒ Latency vs. throughput
‒ Loss tolerance
 Data provenance
 Recovery / recording a rolling log
of fine-grained history
 Designed for extension
Different from Apache NiFi
 Design and Deploy
 Warm re-deploys
Key Features

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NiFi vs. MiNiFi Java Agent
NiFi Framework
Components
MiNiFi
NiFi Framework
User Interface
Components
NiFi

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Example: Company X provides alerting services when users’ resting heart rate higher
than a threshold
Real-Time Insights Require DataFlow Mgmt and Stream Processing
Acquire
Data
Company X Cloud
Instance 1
Acquire
Data
Company X Cloud
Instance 2
Acquire
Data
Company X Cloud
Instance 3
Acquire Data
Across Cloud
Instances
Parse, Filter,
Validate, Enrich
and Route
Core Data Center
Analytics/Pattern
Match
Data
Store
Alerts
Dashboards/Visualization
Flow Management Stream ProcessingLegend:

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Data in Motion Needs Dataflow Management and Stream Processing
 Acquire data from various Wearable Device’s Cloud Instances
 Move Data from Customer Cloud Instances to on-premise instance
 Perform Intelligent Routing & Filtering of data. The routing and filtering rules will be often
changed at run-time.
 Deliver the data data to various downstream systems. New downstream apps should will always
appear and the data should be fed to it when it comes online.
 Parse the device data to standardized format that downstream sysem can understand
 Enrich the data with contextual information including patient/customer info (age, sex, etc..)
 Recognize the Pattern when the resting heart rate exceeds a certain threshold (the insight),
and then create an alert/notification.
 Run a Outlier detection model on streaming heart rate that comes in. If the score is above
certain threshold, alert on the heart rate.
Flow
Management
(NiFi, MiNiFi)
Stream
Processing
(Storm, Kafka)

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Data in
Motion
(Cloud)
Data in
Motion
(on-premises)
Data at
Rest
(on-premises)
Edge
Data
Data in
Motion
Edge
Analytics
Data at
Rest
(Cloud)
Edge
Data
Data at
Rest
(on-premises)
Closed Loop
Analytics
Machine
Learning
Deep
Historical
Analysis
The Future of Data
Architectural Transformation Enabled By Connected Data Platforms
On PremCloud

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Use Cases for Data in Motion
Use Cases for Data-in-Motion Using DataFlow Mgmt
• Data Ingestion
• Edge Intelligence
• First Mile Problem
• Physical Data Movement
• Simple event processing such as Route, Filter, Enrich,
Transform, etc.
When Only DataFlow
Management is
Required
Use Cases for Data-in-Motion Using DataFlow Mgmt and
Steam Processing
• Flow Management to deliver data for Stream Processing
• PLUS: Complex pattern matching on unbounded streams of
data.
When Both DataFlow
Management and
Stream Processing

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Flow management
D A T A I N M O T I O N D A T A A T R E S T
IoT Data Sources AWS
Azure
Google Cloud
Hadoop
NiFi
Kafka
Storm
Others…
NiFi
NiFi NiFi
MiNiFi
MiNiFi
MiNiFi
MiNiFi
MiNiFi
MiNiFi
MiNiFi
NiFi
HDF 2.0: Data-in-Motion Platform
Enterprise Services
Ambari Ranger Other services
Flow management + Stream Processing

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New Stream Processing Features HDF 2.0
 New Storm Connectors
 Storm-Kafka Spout using new
client APIs
 Storm Distributed Log Search
 Storm Dynamic Worker
Profiling
 Kafka Grafana Integration
 Storm Grafana Integration
 Improved Nimbus HA
 Storm Automatic Back
Pressure
 Storm Distributed cache
 Storm Windowing and State
Management
 Storm Performance
improvements
 Improved Kafka SASL
 Storm Topology Event inspector
 Storm Resource Aware
Scheduling
 Storm Dynamic Log Levels
 Pacemaker Storm Daemon
 Kafka Rack Awareness
Developer Productivity EnterpriseReadiness Operational Simplicity

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More Information, Resources
Hortonworks Community Connection:
Data Ingestion and Streaming
https://community.hortonworks.com
 Partnerworks: http://hortonworks.com/partners/
 HDF Certification:
http://hortonworks.com/partners/product-integration-certification/
 Webinars: http://hortonworks.com/events-webcasts/
 Sandbox: http://hortonworks.com/events-webcasts/
 HDF: http://hortonworks.com/hdf/
 HDP: http://hortonworks.com/hdp/