I am working on a Hadoop application as a freelancer and want to use a Job Tracker as part of client requirement in it. I am bit confused like how it will determine the location of the data. How does it schedule a task? I also want to know how does it maintains instances and how does it handle multiple instances. Since I have never used it before, so want to understand it right from basics.

I have encountered a problem in ABAP. I am trying to use ALV grid with object oriented concept, but facing issue while assigning object to Grid Class. It is also not allowing me to use Submit Clause for background memory usage. Is there any other simple way to use ALV? Can someone explain the concept of oops with ALV grid by some examples? It will be helpful if you can show some snippet of working code and describe the same.

Do you know about the system that links together, mainframes, minis, and microcomputers that are in close proximity for the purpose of communication? What is a network that uses a server to meet the needs of the other computers on the network? Additionally, please tell me more about the best network architecture for connecting many PCs together in an office.

When was AVG Antivirus founded? Will Windows 10 come with a virus protection program? What are the some most popular antivirus programs for Windwos? Can we find free online virus scanners? What should be done to disable antivirus program in Windows? Do antivirus companies create computer viruses to make their business better?

When and who developed the Music service and software program? When the iTunes were introduced? Do iTunes allow both Mac and PC users, to purchase and legally download songs, videos, podcasts, and other media from the Internet? Does the program allow users to listen and view the content they download and, if needed, burn the content to a CD?

I am working on a windows application in my organization. We are going to implement this application now on web as well as on mobile also. Can someone suggest what should be the correct approach for that and also it should not be too costly? We are willing to use RESTful services for this implementation. Currently application is on Microsoft framework 3.5 and sql server as backend. Can someone please elaborate more on RESTful services?

I want to implement charts and reports on oracle in my project.  What are the options available in oracle? I explored that it supports the high end charts for dashboard from data ware house? How can I implement that? My project caters to the need of sales team. Is there any other functionality which can build 3D charts in oracle? Also I need to attach audio and video in the charts to self-demonstrate the use of project. Can someone help me on that? 

What is Federated Cloud? Is this a technology to move my data warehouse on cloud? If yes than can someone can explorer the steps for this? Also I have heard that there are many service providers out of which I can choose one, can someone give me details on this. What are the differences in their facilities? Is federated Cloud service costly? What type of guarantee is provided for my data security by these services?

 I have decided to deploy my application on cloud setup.  What steps do I need to implement regarding its architectural design? What are the common issues faced during its implementation? Can I get some kind of guidelines on it? For an example:Do I need to change my current architecture of my application? How the integration will be done from other feeds consumed by my application? How will I integrate my up streams and down streams? What should be on priority like my non-functional requirements priority?

I am planning to buy a new Samsung S6 mobile.  But I have some queries regarding it.Does S6 Edge supports the full range of network spectrum, including 3G CDMA and 4G LTE? I am particularly concerned about its call quality and network speeds, whether it will be up to the mark or not. But I have heard that S6 Edge will give better download speed than iPhone, not sure about it. Should I buy S6 or should I go for IPhone 6? Please suggest.