HiBench 7官方:https://github.com/intel-hadoop/HiBench 一 简介 HiBench is a big data benchmark suite that helps evaluate different big data frameworks in terms of speed, throughput and system resource utilizations. It contains a set of Hadoop, Spark and st
做性能测试时,往往需要大量的参数化数据,比如注册. from random import Random def random_str(randomlength=8): str='' chars='0123456789' length=len(chars) -1 random=Random() for i in range(randomlength): str+=chars[random.randint(0,length)] return str li='1' list=li.split(",&q
MySQL 各种超时参数的含义 今日在查看锁超时的设置时,看到show variables like '%timeout%';语句输出结果中的十几种超时参数时突然想整理一下,不知道大家有没有想过,这么多的timeout参数,到底有什么区别,都是做什么用的呢? MySQL [(none)]> show variables like '%timeout%'; +------------------------------+----------+ | Variable_name | Value | +
Join Optimization Join Optimization Improvements to the Hive Optimizer Star Join Optimization Star Schema Example Prior Support for MAPJOIN Limitations of Prior Implementation Enhancements for Star Joins Optimize Chains of Map Joins Current and Futur
作者:造数科技链接:https://www.zhihu.com/question/21395276/answer/219747752 使用Python绘图 我们先来看看,能画出哪样的图 更强大的是,每张图片下都有提供源代码,可以直接拿来用,修改参数即可. """ =============== Basic pie chart =============== Demo of a basic pie chart plus a few additional features. In