spark Learning (Five)

(A) into the spark-shell command interface (default scala command interface)

 　1, if a spark into the installation directory is used,

　　1, a machine start spark: ./ bin / spark-shell --master <master-url> command to enter the shell interface, master-url parameters may be: local [*] multithreaded start logical CPU, local [n ], using n CPU thread start

　　2, start the spark clustered: spark: // Host IP: 7077 (default port)

　　3, add the CLASSPATH jar package: ./bin/spark-shell --master local [. 4] --jars code.jar

　　4, Exit :(: quit)

　2, Yarn cluster model:

　　yarn-client: The client computer does not pass, the commissioning phase

　　

　　yarn-cluster: The client computer off does not affect the normal use stage

　　

 

 　3, sbt scala is a Spark used to write programs to package tool (not installed successfully)