Like Hadoop, YARN has a script that provides commands to manage YARN. The commands are of the following two kinds:
In Hadoop deployment, the YARN script is found in the same directory as the Hadoop scripts. The general syntax of the YARN script is as follows:
yarn [--config <config directory>] command [options]
The –config option can be used to override the default configuration. The default configuration directory is picked up from the environment variable $HADOOP_PREFIX/conf.
The following are the important user commands in YARN:
The
jarcommand is used to run a custom, user-built JAR file. In the previous distributed shell example, we use the following command to run the YARN job. The syntax for the command is:yarn jar <jar file path> [main class name] [arguments…]The
applicationcommand is used to manipulate a running...