utilizing more than one computer, connected to each other with a communication link to accomplish a common task.
0
votes
0answers
5 views
How TaskTrackers informs Jobtrackers about their state?
I read about the Apache Hadoop. They said that in HDFS, tasks are any process, that is, mapper or reducer. And they together called jobs.
They have two things, JOBTRACKER, and TASKTRACKER , ...
-3
votes
0answers
25 views
look up for genetic algorithm solving distributed operating system scheduling [closed]
i have to implement one of scheduling algorithm of cloud computing by java and for this project i searched alto and know all cloud computing system worked with distributed OS then i searched for ...
1
vote
1answer
21 views
how to get the 1 million-th click of a website
I often heard this question coming from different sources, but never got a good idea of the technologies to achieve this. Can anyone shed some lights? The question is: you have a website which has ...
0
votes
0answers
7 views
Using DHT to lookup stuff. SHA-1. Chord protocol
I'm trying to implement the Chord protocol in order to quickly lookup some nodes and keys in a small network. What I can't figure out is ... Chord cosideres the nodes and keys as being placed on a ...
0
votes
0answers
9 views
Schema changes to persistent entities with Terracotta
I am running a single Terracotta server with Tomcat7 application servers connected as clients. My application uses hibernate and uses ehcache for level2 caching. I am trying to do a 'hot' upgrade ...
-1
votes
1answer
25 views
As a software engineer should i focus on distributed systems or parallel computing?
From my understanding distributed systems focuses on loosely connected CPUs to compute large tasks while parallel computing focuses on tightly connected CPUs to compute large tasks(maybe not as big?). ...
0
votes
1answer
19 views
Differences between JPPF and Hadoop frameworks [closed]
What are in your opinion the main differences between Hadoop and JPPF?
I have a good experience with Hadoop programming, but I've never used JPPF. I know that Hadoop is based on MapReduce and JPPF ...
0
votes
2answers
29 views
How to know which client invoke RMI method on the server
I'm developing a system using Java RMI. I've several RMI clients and one RMI server. My system is supposed to be Byzantine Fault Tolerant, so the clients can be malicious (not only crash-stop).
In ...
0
votes
1answer
22 views
how to update data in distributed environment
We have a website showing videos to our users running on multiple web servers in a distributed environment. We are going to introduce a new feature where we only show videos to our users that they ...
0
votes
1answer
37 views
What's the best way to call a REST API from MVC4
MVC4 provides a very simple way to return serialized objects from HTTP requests. What's the best way to call a REST or other JSON/XML API from an MVC4 application? I could construct an HTTP request, ...
6
votes
2answers
120 views
When performing a calculation - how many threads should I open?
I am writing a program that performs some long computation, which I can break into as many tasks as I want. For the sake of discussion, let's suppose I am writing an algorithm for finding whether or ...
-4
votes
1answer
32 views
distributed storing data like facebook [closed]
We are planning to create one web application like Facebook. We have problem of storing data in multiple zones.
We think that, we will create user wise database and we will store every comment in ...
facebook
0
votes
1answer
54 views
Running RMI client in Tomcat 7 got ClassNotFoundException
I am having some difficulties with RMI and Tomcat. This is the big picture of this project I am working on: the RMI client is called by a Java servlet that runs in Tomcat, the servlet accept user ...
2
votes
1answer
38 views
Design pattern to monitor distributed system?
I have a distributed system: 12-14 applications running on 10 boxes (each with about 8 cores). My apps are heavily multithreaded.
In the course of the day my apps are pretty busy. Latency is ...
0
votes
1answer
28 views
Recursive Algorithm on Distributed Systems
Are there any generic systems/framework which allows to run recursive algorithms on distributed systems. Like hadoop can be used for batch processing , I am looking for framework which can enable to ...
