Apache Tez processing of Hive jobs
After migrating to CDP Private Cloud Base, CDP Public Cloud, or Cloudera Data Warehouse (CDW) Public Cloud, you must understand how the Apache Tez execution engine is used to run your Hive workloads.
Apache Tez provides the framework to run a job that creates a graph with vertices and tasks. The entire execution plan is created under this framework. Apache Tez provides the following execution modes:
- Container mode — Every time you run a Hive query, Tez requests a container from YARN.
- LLAP mode — Every time you run a Hive query, Tez asks the LLAP daemon for a free thread, and starts running a fragment.