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What we want to does in this short tutorial, I'll describe the required tournaments for setting up a single-node Hadoop using the Hadoop distributed File System (HDFS) on Ubuntu Linux. Are lo ...

Kafka configures SASL authentication and permission fulfillment documentation. First, the release notes This example uses: zookeeper-3.4.10, kafka_2.11-0.11.0.0. zookeeper version no requirements, kafka must use version 0.8 or later. Second, zookeeper configuration SASLzookeeper cluster or single node configuration the same. Specific steps are as follows: 1, zoo.cfg file configuration add the following configuration: authProvider.1 = org.apa ...

After MySQL was acquired by Oracle, the industry has never stopped talking about the Open-source database, and the voice of PostgreSQL will be replaced as the most popular Open-source database. However, from the Db-engines rankings, the gap between PostgreSQL and MySQL is far more than "a few floors" so high (PostgreSQL not score a fraction of MySQL). Looking at the entire list of 193 databases, we will find that the NoSQL database has accounted for most of the traditional relationship ...

Save space, straight to the point. First, use the virtual machine VirtualBox to configure a Debian 5.0. Debian is always the most pure Linux pedigree in open source Linux, easy to use, efficient to run, and a new look at the latest 5.0, and don't feel like the last one. Only need to download Debian-501-i386-cd-1.iso to install, the remaining based on the Debian Strong network features, can be very convenient for the package configuration. The concrete process is omitted here, can be in ...

Serendip is a social music service, used as a http://www.aliyun.com/zixun/aggregation/10585.html "> Music sharing" between friends. Based on the "people to clustering" this reason, users have a great chance to find their favorite music friends. Serendip is built on AWS, using a stack that includes Scala (and some Java), Akka (for concurrency), play framework (for Web and API front-end ...).

Serendip is a social music service, used as a http://www.aliyun.com/zixun/aggregation/10585.html "> Music sharing" between friends. Based on the "people to clustering" this reason, users have a great chance to find their favorite music friends. Serendip is built on AWS, using a stack that includes Scala (and some Java), Akka (for concurrency), play framework (for Web and API front-end ...).

There seems to be a plot in a thriller that says, "It's easy ... It's so easy. "And then all things began to fall apart. When I started testing the top-tier Java cloud Computing in the market, I found that the episode was repeating itself. Enterprise developers need to be more concerned about these possibilities than others. Ordinary computer users get excited when there are new scenarios in cloud computing that make life easier. They will use cloud-based emails and if the emails are lost they can only shrug their shoulders because the electrons ...

Since I worked as an internship in 2006, I have experienced four software companies, all of them foreign companies, among which are Fortune 500 telecommunications companies, middle-sized European financial companies engaged in options futures trading and Android development for large automobile manufacturers. Emerging companies in smart cars. Since entering the IT industry, I have been interviewed for many times during the job search process. In the past two years, I have also had many interviews with other people's experiences. I feel now to express my views on this issue, this article is a stand-in reflection of the interviewer's point of view on the programmer interview and experience summary ...

Reprint a good article about Hadoop small file optimization. From: http://blog.cloudera.com/blog/2009/02/the-small-files-problem/translation Source: http://nicoleamanda.blog.163.com/blog/static/...

Small files refer to files that are smaller than the block size (default 64M) of size HDFs. If you store small files in a HDFs, there will certainly be a lot of such small files in HDFs (otherwise you won't be using Hadoop).　　The problem with HDFs is that you can't handle a lot of small files efficiently. Any file, directory, and block, in HDFs, is represented as an object stored in the Http://www.aliyun.com/zixun/aggrega ...