spark shell

local模式启动

# spark-shell

Spark context Web UI available at http://192.168.xx.101:4041
Spark context available as 'sc' (master = local[*], app id = local-1605581715026).
Spark session available as 'spark'.

启动成功后
1提供一个webui端口
2提供一个变量名叫sc的SparkContext对象
3 提示master是local模式
cluster模式启动

# spark-shell --master spark://mypc01:7077

Spark context Web UI available at http://192.168.xx.101:4041
Spark context available as 'sc' (master = spark://mypc01:7077, app id = app-20201117110548-0000).
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