Trending Topic Time limit: 1.000 seconds Imagine you are in the hiring process for a company whose principal activity is the analysis of information in the Web. One of the tests consists in writing a program for maintaining up to date a set of trendi…

map暴力. .. Imagine you are in the hiring process for a company whose principal activity is the analysis of information in the Web. One of the tests consists in writing a program for maintaining up to date a set of trending topics. You will be hired de…

We’re in Orlando for a working session as part of the Core Team building BABOK V3 and over dinner this evening we got to discussing the relationship between user stories and use cases (it wasn't the only thing we discussed, we are also a social group…

As I walked through the large poster-filled hall at CVPR 2013, I asked myself, “Quo vadis Computer Vision?" (Where are you going, computer vision?)  I see lots of papers which exploit last year’s ideas, copious amounts of incremental research, and an…

Scheduling Lectures Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 607 Appoint description:  System Crawler  (2015-08-26) Description   You are teaching a course and must cover n ( ) topics. The leng…

UVa 10006 - Carmichael Numbers An important topic nowadays in computer science is cryptography. Some people even think that cryptography is the only important field in computer science, and that life would not matter at all without cryptography. Alvar…

众所周知,由于Zookeeper并不适合大批量的频繁写入操作,新版Kafka已推荐将consumer的位移信息保存在Kafka内部的topic中,即__consumer_offsets topic,并且默认提供了kafka_consumer_groups.sh脚本供用户查看consumer信息. 不过依然有很多用户希望了解__consumer_offsets topic内部到底保存了什么信息,特别是想查询某些consumer group的位移是如何在该topic中保存的.针对这些问题,本文将结合…

Kafka创建topic命令很简单,一条命令足矣:bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 3 --partitions 3 --topic test 这条命令会创建一个名为test的topic,有3个分区,每个分区需分配3个副本.那么在这条命令之后Kafka又做了什么事情呢?本文将对此进行一下梳理,完整地阐述Kafka topic是如何创建的. topic创建主要分为两个部分:命令行…

前提条件: 在启动broker时候开启删除topic的开关,即在server.properties中添加:  delete.topic.enable=true 命令: bin/kafka-topics.sh --zookeeper zk_host:port/chroot --delete --topic my_topic_name 这条命令其实就是在zookeeper(假设你的chroot就是/)的/admin/delete_topics下创建一个临时节点,名字就是topic名称,比如如果执行命…

版本 0.9.2 创建topic bin/kafka-topics.sh --create --topic topic_name --partition 6 --replication-factor 1 -zookeeper 10.27.100.207:2181,10.27.100.144:2181,10.27.100.145:2181 开启console consumer查看消息 bin/kafka-console-consumer.sh --topic rt_live_pcweb -zook…