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.

Gyrocopter is a relatively a very new terminology for me and my friends. These days, on some or the other way, we are hearing about it. But it is still difficult to understand this technology. Is it a type of helicopter? If yes, then how is it different? Are they going to replace helicopters soon? Is it faster than helicopter? What type of fuel is used for it? Who invented this technology and for what purpose?

 I have few questions on CDN.I am hosting locally and I want to pick the best CDN available. How to choose the most efficient one for my purpose? What is 3G latency concept on CDN? How can I manage performance fluctuation with a CDN and can it provide guarantee of 24/7 availability of my site services? Can it help me render some heavy pages faster? How is SPDY related to CDN and what industries use SPDY?

What is Reverse Painter’s algorithm? What problem or issue does this algorithm caters to? With just the name it is difficult to identify the area it is applied to but I have heard that it is related to Graphics? Can someone tell me how is it related to computer Graphics? Also I have heard about some flaws in this algorithm, and someone suggested about z-buffer solution, but I have no idea how both of these are related. Can someone please explain me this?

My Dell laptop won’t go into a standby mode. The configuration is correct and all the settings are also perfect and are showing up in the control panel of the computer. Every time I try putting it in a standby mode it remains powered. What could be the problem with computer and which other settings can I check in the computer that is related to powering a computer to help in resolving this issue?

Because of the untrustworthy power supply in most of the countries, the use of power banks has become the order of the day. Due to these activities I would like to know if there are any drawbacks in the use of power banks for Smart phone and laptops. And to what extent the power banks influence the performance of smart phone and laptops?

Which quality makes special Max Payne 3 game from the Hit Man? Can we focus our mind on these points as our point of referencing? The story line, features,  specifications and characters in the game, its interactive nature, suspensions, user friendly or gamer friendly, the graphical interface of the game, the sound quality and the total concept of the game? Which one is the best? 

As we all well aware of the rise of Emoji but my concern is, ‘what is the rise of emoji on whatsapp, Facebook, twitter, line etc. and same with respect of languages?’ What about the circulative statements rising around “the rise of emoji on instagram is causing corollary? What is influencing the rise of such thoughts?