Yarn - Yarn CLI

Yarn Hortonworks

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yarn is a command line client

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Yarn Hortonworks
Yarn - Application (app)

An Hadoop application in the context of Yarn is either: a single job (ie a run of an application) or a DAG of jobs. On a application level (vs cluster level), Yarn consists of: a per-application...
Yarn Hortonworks
Yarn - Capacity Scheduler

The hierarchy is defined through level in the path yarn.scheduler.capacity.. For instance: The level () is a level below () Several queues can be defined by level. Children do not inherit properties...
Yarn Hortonworks
Yarn - Client

Yarn - Client
Yarn Hortonworks
Yarn - Container (RmContainer|Resource Container)

A resource container incorporates resource elements such as memory, cpu, disk, network etc. The Docker...
Yarn Ui Log Ambari
Yarn - Log (Container, Application) - Tfile

The log of an application (ie from all the containers that the app use when running). Application logs are not saved in text format. They are saved in a binary format called org/apache/hadoop/io/file/tfile/TFileTFile....
Yarn Hortonworks
Yarn - Node Manager

The NodeManager (agent) is responsible for: containers, monitoring their resource usage (cpu, memory, disk, network) and reporting the same to the ResourceManager/Scheduler. The NodeManager is...
Queue Full
Yarn - Queue

A queue is a scheduler data structure that allows scheduler implementation to categorize apps into queue. Queue definitions and properties such as capacity, ACLs can be changed, at runtime. The...
Yarn Hortonworks
Yarn - Timeline Server (ie yarn app history server)

The storage and retrieval of application’s current and historic information Component: timeline store known as: ApplicationHistoryServer Map Reduce History Server resource manager Rest API...



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