知识文档汇总

python中的lambda表达式:https://blog.csdn.net/zjuxsl/article/details/79437563

python中没有reduce的问题:https://blog.csdn.net/zjuxsl/article/details/79437563

eclipse搭建连接HDFS:37.04高可用搭建理论(Av46726994,P37)

stringbuilder和stringbuffer的区别:https://blog.csdn.net/csxypr/article/details/92378336

数据倾斜:mapreduce中间会形成kvp,p会使数据随机分布到不同的reduce结点上去.

https://baike.baidu.com/item/%E6%95%B0%E6%8D%AE%E5%80%BE%E6%96%9C/4740858?fr=aladdin

reduce数量的设置:1、数据量 2、数据(key种类)

hive实现wordcount:https://blog.csdn.net/levy_cui/article/details/51142816

mysql join方法:https://blog.csdn.net/huatian5/article/details/80854455

posted @ 2020-02-21 20:27  一大碗小米粥  阅读(129)  评论(0编辑  收藏  举报