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apache / tez

Apache Tez

Mirrored from http://gitbox.apache.org/repos/asf/tez.git
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  1. 5b81017 TEZ-4113: TezUtils::createByteStringFromConf should use snappy instead of DeflaterOutputStream (rbalamohan, reviewed by Ashutosh Chauhan) by Rajesh Balamohan · 16 hours ago master
  2. bf4942b TEZ-4115: turn on data-via-events as default (Contributed by Richard Zhang, reviewed by rbalamohan) by Rajesh Balamohan · 2 days ago
  3. 271351b TEZ-4098: tez-tools improvements: log-split, swimlane (László Bodor, reviewed by rbalamohan) by Rajesh Balamohan · 2 weeks ago
  4. a6219ed TEZ-4103. Progress in DAG, Vertex, and tasks is incorrect by Ahmed Hussein · 5 weeks ago
  5. 689d738 TEZ-4108. NullPointerException during speculative execution race condition by Jonathan Eagles · 5 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.