Image source: HDFS-1623 design Document
Picture Author: Sanjay Radia, Suresh Srinivas
In this diagram, we can see the general structure of Ha, whose design considerations include:
Use shared storage to synchronize edits information between two nn. The previous HDFS is share nothing but nn, now NN and share storage, this is actually transferred the location of a single point of failure, but in high-end storage devices have a variety of raid and
individuals is N. This process is often represented using the following two diagrams:
The present life of the NSGA-II algorithm for academic multi-objectiveWhen the genetic algorithm solves the bottleneck of multiobjective optimization, many scholars spend a lot of time and energy on the multi-objective optimization genetic algorithm, Goldberg first Pareto the concept of the optimal solution with the concept of fitness value, and will Pareto the concept and adaptability of the non-dominant sor
Stored Procedure | Execute write execute your first Yukon CLR (Common language runtime) stored procedure
Author: Suhil Srinivas
Translation: Zhu Yi
Original source: http://www.c-sharpcorner.com/Longhorn/Yukon/First-CLR-Procedure.asp
Describe
This article describes the steps to write and execute a Yukon CLR common language runtime stored procedure. This article is also a starting point for developing SQL stored procedures for mi
) Professor Qiang ji:http://www.ecse.rpi.edu/~qji/, Rensselaer Institute of Technology(84) CMU researcher Daniel Huber:http://www.ri.cmu.edu/person.html?person_id=123(85) professor at the University of Toronto: David j.fleet:http://www.cs.toronto.edu/~fleet/(86) Professor Andrea Cavallaro:http://www.eecs.qmul.ac.uk/~andrea/, Queen Mary College, University of London(87) Professor Kyros kutulakos:http://www.cs.toronto.edu/~kyros/, University of Toronto(88) Duke University professor Carlo tomasi:ht
High Availability for the HDFS namenode
Sanjay Radia, Suresh Srinivas
Yahoo! INC
(This article is a translation of namdnoe ha design documents)
1. Problem Description
There are many ways to improve the availability of HDFS namednoe (NN), including reducing the startup time and updating the configuration without restarting the cluster, reduce the upgrade time and provide a manual or automatic NN failover. This article focuses on NN failover to solve th
1. Word Segmentation
2. Create an inverted index
3. Search
References:
Http://blog.tianya.cn/blogger/view_blog.asp? Blogname = aftaft
Http://www.ibm.com/developerworks/cn/java/wa-lucene/
For more information, see the original article on the developerworks global site.
Practical Lucene: I first learned about Lucene and introduced some basic concepts of Lucene. Then I developed an application to demonstrate the process of using Lucene to create an index and search for it.
Parsing, indexing, a
: David J. FLEET: http://www.cs.toronto.edu /~ Fleet/
Andrea cavallaro, professor at Queen Mary's College, University of London: http://www.eecs.qmul.ac.uk /~ Andrea/
(87) University of Toronto professor kyros kutulakos: http://www.cs.toronto.edu /~ Kyros/
(88) Duke University professor Carlo Tomasi: http://www.cs.duke.edu /~ Tomasi/
(89) Professor of CMU martial Hebert: http://www.cs.cmu.edu /~ Hebert/
(90) mit Assistant Professor Antonio Torralba: http://web.mit.edu/torralba/www/
(9
/~tomasi/(89) Professor Martial hebert:http://www.cs.cmu.edu/~hebert/, CMU(90) MIT Assistant Professor Antonio torralba:http://web.mit.edu/torralba/www/(91) University of Maryland researcher Yasel yacoob:http://www.umiacs.umd.edu/users/yaser/(92) Cornell University professor Ramin zabih:http://www.cs.cornell.edu/~rdz/(93) Dr. CMU Tanaka: http://www.cs.cmu.edu/~yuandong/(94) Srinivasa Narasimhan, Associate professor, CMU: http://www.cs.cmu.edu/~srinivas
://www.cs.toronto.edu/~kyros/, University of Toronto(88) Duke University professor Carlo tomasi:http://www.cs.duke.edu/~tomasi/(89) Professor Martial hebert:http://www.cs.cmu.edu/~hebert/, CMU(90) MIT Assistant Professor Antonio torralba:http://web.mit.edu/torralba/www/(91) University of Maryland researcher Yasel yacoob:http://www.umiacs.umd.edu/users/yaser/(92) Cornell University professor Ramin zabih:http://www.cs.cornell.edu/~rdz/(93) Dr. CMU Tanaka: http://www.cs.cmu.edu/~yuandong/(94) Srini
kutulakos:http://www.cs.toronto.edu/~kyros/, University of Toronto(88) Duke University professor Carlo tomasi:http://www.cs.duke.edu/~tomasi/(89) Professor Martial hebert:http://www.cs.cmu.edu/~hebert/, CMU(90) MIT Assistant Professor Antonio torralba:http://web.mit.edu/torralba/www/(91) University of Maryland researcher Yasel yacoob:http://www.umiacs.umd.edu/users/yaser/(92) Cornell University professor Ramin zabih:http://www.cs.cornell.edu/~rdz/(93) Dr. CMU Tanaka: http://www.cs.cmu.edu/~yuan
Merlin
Driver
Rachel
Power
Blondes
75
Michelle
Marine
Slayer
Victoria
Enjoy
76
Corvette
Angels
Scott
Asdfgh
Girl
77
Bigdog
Fishing
2222
Vagina
Apollo
78
Cheese
David
ASDF
Toyota
Parker
79
Matthew
Maddog
Video
Travis
Qwert
80
121212
Hooters
London
Hotdog
Time
81
Pat
provided to simplify usage. The Client's responsibilities are as follows:
Provides a consistent API for application programming languages, simplifying application programming
Improve access Performance
The client is able to improve performance because the cache is available for read, and for write can be buffered (buffer) batch mode, details we do not start here, more about the Client design implementation analysis, the following will be written separately.SummarizeOriginally
limit the use of Web 2.0 applications to developers or business it terminals? One of the key features of Web 2.0 applications is the idea of creating value through collaboration. Indeed, the business side can use these features. Consider the unique user friendliness of Web 2.0 applications. What if business friendliness enables business users to use Web 2.0 applications to develop solutions to some problems without involving the IT department? Will business flexibility be greatly improved?
This
Nsga2 mainly improves the NSGA algorithm. NSGA was proposed in a paper titled multiobjective Function Optimization Using nondominated sorting genetic algorithms published by N. Srinivas and K. Deb in 1995. This algorithm has a good effect in quickly finding the front of the company and maintaining the diversity of populations. However, the following problems have also occurred in applications over the years:
1. The time for non-dominated sorting is ve
, but the Java language specification does not guarantee that GC will be executed. Incremental GC can shorten the pause time of Java programs.
References
Article
Ouyang Chen, Zhou Xin "Java and Memory leakage" http://www-900.ibm.com/developerWorks/cn/java/l-JavaMemoryLeak/index.shtml
Y. Srinivas Ramakrishna "Atuomatic memory management in the Java hotspot Virtual Machine", http://java.sun.com/javaone
Monica pawlan "reference objects and Garbage C
Contact Us
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.