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apache / tez

Apache Tez

Mirrored from http://gitbox.apache.org/repos/asf/tez.git
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  1. 1af0897 TEZ-4067. Tez Speculation decision is calculated on each update by the dispatcher by Ahmed Hussein · 9 days ago master
  2. 47f0f35 TEZ-3860. JDK9: ReflectionUtils may not use URLClassLoader by László Bodor · 2 weeks ago
  3. 9c66f97 TEZ-4083. Upgrade to latest 9.3.x Jetty version by László Bodor · 2 weeks ago
  4. 32e80e7 TEZ-3992. Update commons-codec from 1.4 to 1.11 by László Bodor · 3 weeks ago
  5. 616229e TEZ-4084. Tez local mode fails when distributed cache creates link with parent by Jacob Tolar · 3 weeks ago

Apache Tez

Apache Tez is a generic data-processing pipeline engine envisioned as a low-level engine for higher abstractions such 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 to perform 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.