Apache Tez

1
What Is Apache Tez ?

• An application framework
• Build on top of Apache Hadoop YARN
• Uses directed-acyclic-graphs ( DAG's )
• Open source / Apache 2.0 license
• Scaleable
• Performant

2
Hadoop Eco Sphere
3
Tez DAG

• Tez directed-acyclic-graphs ( DAG )
• Distributed data processing
• Vertices represent data transformation
• Edges represent data movement
• For data processing applications
• TEZ is an execution engine
• Built on top of YARN

4
Tez Performance

• Performance improvement compared to Map Reduce
• No need for HDFS storage between MR jobs
• Better execution performance
• Expressive dataflow API for DAG
• Visualise what you wish to construct
• Add processor vertices to graph
• Add data movement edges to graph
• To build the computational DAG that you require

5
Tez Deployment

• Tez is client side
• Install Tez client locally
• Build task DAG
• Load DAG/Tez libraries to HDFS
• Execute YARN based job
• From Tez client
• Using HDFS based DAG library

6
Tez Existing MR Tasks

• Tez can process existing Map Reduce ( MR ) tasks
• No need for any modification
• Allows for phased migration
• Of existing MR jobs to DAG's
• Allows for near real time task types
• Rather than just MR tasks which are
• Batch oriented
• Iterative
• Resource intensive

7
Tez API

• Tez DAG defines the job
• Vertex defines one DAG job step
• Requires user logic and resources for step
• Edge defines one DAG data movement step
• From producer to consumer
• Edge properties define movement
• How data moves
• Schedules when data moves relationally
• Defines durability of data

8
Tez Hive

• Increased performance
• Compared to Map Reduce usage
• No need to use HDFS for intermediate steps
• Greater parallelism via DAG's
• Less complex steps in DAG compared to MR
• Reduced latency
• Higher throughput
• Better speed

9
Available Books

• See Big Data Made Easy
• Apress Jan 2015
• See Mastering Apache Spark
• Packt Oct 2015
• See Complete Guide to Open Source Big Data
  Stack
• Apress Jan 2018
• Find the author on Amazon
• www.amazon.com/Michael-Frampton/e/B00NIQDOOM/
• Connect on LinkedIn
• www.linkedin.com/in/mike-frampton-38563020

10
Connect

• Feel free to connect on LinkedIn
• www.linkedin.com/in/mike-frampton-38563020
• See my open source blog at
• open-source-systems.blogspot.com/
• I am always interested in
• New technology
• Opportunities
• Technology based issues
• Big data integration