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Apache Tez

Apache Tez is a generic data-processing pipeline engine envisioned as a low-level engine for higher abstractionssuch as Apache Hadoop Map-Reduce, Apache Pig, Apache Hive etc.

At its heart, tez is very simple and has just two components:

• The data-processing pipeline engine where-in one can plug-in input, processing and output implementations toperform arbitrary data-processing. Every 'task' in tez has the following:

• Input to consume key/value pairs from.
• Processor to process them.
• Output to collect the processed key/value pairs.

• A master for the data-processing application, where-by one can put together arbitrary data-processing 'tasks'described above into a task-DAG to process data as desired.The generic master is implemented as a Apache Hadoop YARN ApplicationMaster.