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Bigdata Blog | 大数据技术博客小米大数据团队，专注于大数据的存储与计算平台。
http://www.bigdata-blog.net/
小米大数据团队，专注于大数据的存储与计算平台。
http://www.bigdata-blog.net/
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Bigdata Blog | 大数据技术博客 | bigdata-blog.net Reviews
https://bigdata-blog.net
小米大数据团队，专注于大数据的存储与计算平台。
bigdata-blog.net
HBase行数统计Bigdata Blog | Bigdata Blog
http://bigdata-blog.net/2013/11/15/hbase行数统计
另一解决方案是使用MapReduce，HBase自身提供了org.apache.hadoop.hbase.mapreduce.RowCounter类，可以方便地在命令行调用进行统计，但执行效率仍难以达到我们的需求。 开发时还发现rowCount必须指定colum family，于是找到相应的issue并backport到0.94(详见 Reference[4]. 实践也发现每次rpc调用时间都比正常操作长很多，所以务必将hbase.rpc.timeout设置为Integer.MAX VALUE，才能保证程序不会因为rpc超时而退出。 1]Coprocessor Introduction http:/ blogs.apache.org/hbase/entry/coprocessor introduction. 2]HBase Aggregation Example http:/ michaelmorello.blogspot.jp/2012/01/row-count-hbase-aggregation-example.html. Hive SQL优化之 Count Distinct.
YehangjunBigdata Blog | Bigdata Blog
http://bigdata-blog.net/author/yehangjun
目前为止团队已经提交了超过130个改进，其中”new write ahead log threading model”和”reverse scanners”是HBase 0.98.0版本发布时被重点提到的 四大改进. 谢良和冯宏华受邀做了题目为”HBase at Xiaomi”的演讲，主要分享了HBase在小米的使用情况，遇到的问题和所做的改进，以及下一步的改进计划。 点击这里下载ppt HBase at Xiaomi HBaseCon 2014.
HBase在小米的应用与扩展Bigdata Blog | Bigdata Blog
http://bigdata-blog.net/2013/12/24/hbase在小米的应用与扩展
BDTC 2013的ppt: HBase在小米的应用与扩展 – BDTC 2013. 小米HBase实践@2013 hadoop中国技术峰会 →.
文件系统 | Bigdata Blog
http://bigdata-blog.net/category/文件系统
十分钟开发HBase应用Bigdata Blog | Bigdata Blog
http://bigdata-blog.net/2014/12/03/十分钟开发hbase应用
Docker run -d - net=host tobegit3hub/standalone-hbase-0.94. Docker run -i -t - net=host tobegit3hub/smoke-hbase. Apt-get install docker.io. Docker run -i -t - net=host - privileged -v /:/host tobegit3hub/jde. 当然这还需要你对Hadoop和Docker有基本的了解，容器是个很好的概念 Escape Dependency Hell ，已经广泛应用到Google的生产环境上了，希望大家继续关注:-).
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Enterprise data protection solutions from HP Autonomy
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IT-Bestenliste - Die besten BigData-Lösungen
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Deconstructing Big Data - Adventures with NoSQL, Big Data and Data Science
Adventures with NoSQL, Big Data and Data Science. In a former post about CAP Theorem, I wrote about the constraint in distributed databases to satisfy availability, consistency and partition tolerance properties: http:/ bigdata-blog.com/cap-theorem-explained In a scale-out scenario, there’s no way to discard the partition tolerance property, because the system must use commodity hardware as distributed storage and a choice must be made between consistency and … [Read more…]. What is Big Data? Welcome to ...
Bigdata Blog | 大数据技术博客
Docker run -d - net=host tobegit3hub/standalone-hbase-0.94. HBase数据基于LSM模型，写操作写到内存(MemStore)和Write Ahead Log(HLog, 放在.logs下regionserver目录下)就返回。 当RegionServer进程down机时候，regionserver的log目录会被HMaster重命名 添加-splitting后缀 ，目录下所有hlog会被logSpliter分割成为各个region的recover.edits. 当log split完成之后，HMaster会将log移动到.oldlog目录下。 HMaster上的定时线程HFileCleaner/LogCleaner周期性扫描archive目录和.oldlog目录, 判断目录下的HFile或者HLog是否可以被删除，如果可以, 就直接删除文件. Hbase社区官方网址: https:/ hbase.apache.org/. HBase英文文档 https:/ hbase.apache.org/book/book.html. This revisi...
Big Data Broker | Brokering data … one day at a time
Brokering data . one day at a time. How to Play Online Blackjack -Some of the Tips That Can Come In Handy. August 5, 2015 5:30 pm. All the online gambling games are one of the best and easiest ways to make some profit with minimal efforts and time. Today, many people are attracted to play online blackjack game. One of the main reasons behind it is that the online casinos offer huge bonuses, offers and discounts, which attract maximum number of players to join the game of black jack online. The no deposit...
EPSRC CDT Cloud Computing
EPSRC CDT Cloud Computing. EPSRC CDT in Cloud Computing for Big Data. This new multi-million pound initiative is training the next generation of experts in the analysis of "big data" using advanced statistical methodologies and the latest cloud computing technologies, addressing an acute worldwide skills shortage. Apply for a studentship. Find out about our partners. Follow us on Twitter. Newcastle University Digital Institute. The Core, Science Central, Bath Lane, Newcastle upon Tyne.
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