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SparkSQL的UDF及分析案例,220726,,
2022-07-27 19:51:00 【啊六六六】

active,,standby,,
HA SecondaryNameNode的工作交给了Standby NameNode

140.8m,

hive on spark
spark on hive spark写sql,处理hive数据,


persist,checkpoint,
位置,内容,周期



销售、商品、用户
DWS:Presto
面试,新零售说全都用的presto,,
Java开发:公司定制化报表平台
数据分析师:基于报表工具
数据开发:基于报表工具

报表不一定自己做,,,
ClouderaManager
用CDH -》 CM -》 不需要监控工具

主要是运维用,
简历不写docker,

DataX(数据同步工具,功能更强,百度,B站,看)


计算引擎只选一种,,

anaconda

md怎么直接跳到文件夹图片???
iso
简历不写docker,,
项目设计,所有人参与
需求分析、文档设计

大数据量高并发高性能
![]()
hadoop3==9870
hadoop2=![]()
工作中,多台机器,也用10000
连node2
HS2和ThriftServer放在不同的机器
sqlplus:类似于beeline

50070
8088打不开
ResourceManager有问题
Metastore先启动,hs2后启动,,
hive容器,hadoop容器中count聚合进过MR,

10001,thriftserver,,

关容器,再关机,先关spark,再关hive,,
相当于扣电池强制关机,,,,
虚拟机关机,,power -off,,
poweroff
shutdown -h now
![]()




面向对象

condimentsn.
调味料;作料;调味汁(或酱等);酱料






review,pymysql,面向对象,数仓分层?????????
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