YARN container

A container does the actual application specific work.

A container represents a resource (memory). It is

• created, supervised and terminated by a node manager on behalf of an application master
• scheduled by the resource manager

The Node manager allocations at mininum yarn.scheduler.minimum-allocation-mb Megabytes for a container when it creates the container.

Each container has a specific output directory into which standard output, standard error and log messages are written, see log files in YARN.