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6.1 Development
This section contains information related to application development for ecosystem components and MapR products including MapR Database (binary and JSON), MapR Filesystem, and MapR Streams.
Ecosystem Components
The following sections provide information about each open source project that MapR supports.
Hive
Managing Hive Services
Setting the Execution Engine

Setting the Execution Engine

Consider the following definitions:

Runtime — execution time of job.
Session time — time from the start of Hive shell or Beeline until you exit.

You can change the execution engine during a session (session time), but not while executing job in the session (runtime). If you specify the execution engine before starting the job, it will override the hive.execution.engine property in hive-site.xml file. For example, to specify the execution engine:

hive> set hive.execution.engine=tez;
hive> *perform some query here*

If you open another session of hive shell or beeline, you will not see the setting in the session from before and you can set needed properties for every session.