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The Apache TEZ® project is aimed at building an application framework which allows for a complex directed-acyclic-graph of tasks for processing data. It is currently built atop Apache Hadoop YARN.

The 2 main design themes for Tez are:

• Empowering end users by:
  • Expressive dataflow definition APIs
  • Flexible Input-Processor-Output runtime model
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  • Simplifying deployment
• Execution Performance
  • Performance gains over Map Reduce
  • Optimal resource management
  • Plan reconfiguration at runtime
  • Dynamic physical data flow decisions

By allowing projects like Apache Hive and Apache Pig to run a complex DAG of tasks, Tez can be used to process data, that earlier took multiple MR jobs, now in a single Tez job as shown below.

To download the Apache Tez software, go to the Releases page.