摘要：
1:查看防火状态 systemctl status firewalld service iptables status 2:暂时关闭防火墙 systemctl stop firewalld service iptables stop 3:永久关闭防火墙 systemctl disable firew 阅读全文
摘要：
package SparkSQL.fun.project import org.apache.spark.SparkConf import org.apache.spark.sql.expressions.{MutableAggregationBuffer, UserDefinedAggregate 阅读全文
摘要：
要求：统计每一个商品的四种行为出现次数 案例 package SparkSQL.fun.project import org.apache.spark.SparkConf import org.apache.spark.sql.expressions.{MutableAggregationBuffe 阅读全文
摘要：
package SparkSQL.fun.registerfum import org.apache.spark.SparkConf import org.apache.spark.sql.expressions.{MutableAggregationBuffer, UserDefinedAggre 阅读全文
摘要：
package SparkSQL.fun.registerfum import org.apache.spark.SparkConf import org.apache.spark.sql.expressions.{MutableAggregationBuffer, UserDefinedAggre 阅读全文
摘要：
package SparkSQL.fun.registerfum import org.apache.spark.SparkConf import org.apache.spark.sql.{Dataset, SparkSession} import scala.beans.BeanProperty 阅读全文
摘要：
package SparkSQL.fun import org.apache.spark.SparkConf import org.apache.spark.sql.{Dataset, SparkSession} object PartitionCode { def main(args: Array 阅读全文
摘要：
参数 path:路径/login host:www.baidu.com query:username=zs protocol:http协议 package SparkSQL.fun import org.apache.spark.SparkConf import org.apache.spark.s 阅读全文
摘要：
package SparkSQL.fun import org.apache.spark.SparkConf import org.apache.spark.sql.SparkSession /** * _1 _2 * zs 60-70-90 * ls 70-80-90 * 求zs和ls的总成绩 平 阅读全文