Spark2.4.0 SparkContext 源码分析
createSparkEnv
Started SparkUI
注册端点HeartbeatReceiver
createTaskScheduler
启动任务调度器，指定默认任务调度模式FIFO,构建调度池
new DAGScheduler
注册DriverEndpoint端点:Coarse...
Spark First Sample Demo
<h2><span style="font-family:KaiTi_GB2312; font-size:14px">1. 运行环境</span></h2>
<ul><li><span style="font-family:KaiTi_GB2312; font-size:14px">OS:</span></li></ul>
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<p><span style="font-fa
19【在线日志分析】之sparkdemo.jar运行在yarn上过程
1.将之前打包的jar包上传 [root@sht-sgmhadoopnn-01 spark]# pwd /root/learnproject/app/spark[root@sht-sgmhadoopnn-01 spark]# rz rz waiting to receive.
