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apache / tez / f36eeb6736e71009d3d3e57f000c1d135bdc7119
commitf36eeb6736e71009d3d3e57f000c1d135bdc7119[log] [tgz]
authorJonathan Eagles <jeagles@yahoo-inc.com>Wed Oct 21 13:15:28 2015 -0500
committerJonathan Eagles <jeagles@yahoo-inc.com>Wed Oct 21 13:28:07 2015 -0500
treea964b733f5891f6cc132d023e2dda494f43d6701
parent3a8bf0e0afb0a30d5c4cbf82d1e2ce9e0dd22b4a [diff]
TEZ-2850. Tez MergeManager OOM for small Map Outputs (jeagles)

(cherry picked from commit a9cfeb914001c381877657ea39b5de5451740050)
(cherry picked from commit 35bd5ab0b58fa4bd2b9162c14baa7e94e22ba00c)
2 files changed
tree: a964b733f5891f6cc132d023e2dda494f43d6701
  1. build-tools/
  2. docs/
  3. tez-api/
  4. tez-common/
  5. tez-dag/
  6. tez-dist/
  7. tez-examples/
  8. tez-mapreduce/
  9. tez-plugins/
  10. tez-runtime-internals/
  11. tez-runtime-library/
  12. tez-tests/
  13. tez-tools/
  14. tez-ui/
  15. INSTALL.md ⇨ docs/src/site/markdown/install.md
  16. .gitignore
  17. BUILDING.txt
  18. CHANGES.txt
  19. KEYS
  20. LICENSE.txt
  21. NOTICE.txt
  22. pom.xml
  23. README.md
  24. Tez_DOAP.rdf
README.md

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 it's 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.