Yarn - Job

Yarn Hortonworks


A job is a running instance of an application and can be monitored via:



See JobContext - A read-only view of the job that is provided to the tasks while they are running.

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Apache - Hive (HS|Hive Server)

Hive is a relational database developed on top of Hadoop to deliver data warehouse functionality. It uses SQL queries (HiveQL) to run MapReduce jobs on Hadoop. The Hive driver converts the HiveQL queries...
Yarn Hortonworks
Hadoop - Oozie (Job Scheduler)

Oozie is a scheduler for Apache Hadoop jobs. It's a Java Web application. Apache MapReduce, Apache Pig, Apache Hive, Apache Sqoop System job, like Java programs...
Mapreduce Pipeline
MapReduce - Job

A MapReduce Job is a running instance of an MapReduce application This job is a Yarn job as Yarn is the new Hadoop implementation of the Map reduce framework (v2). A map reduce application (/ job) is...
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 - Application Master Container (AM) - Job tracker

An Application Master (AM) is a per-application daemon to look after the lifecycle of the job. driver The Application Master daemon is created when an application is started in the very first container....
Yarn Hortonworks
Yarn - Applications Manager (ASM)

The ApplicationsManager is responsible for: accepting job-submissions, negotiating the first container for executing the application specific ApplicationMaster restarting the ApplicationMaster...
Yarn Hortonworks
Yarn - Federation

Federation allow multiple independent clusters to be used together: for very large jobs, or for tenants who have capacity across all of them. Yarn...

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