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4
votes
1answer
186 views

Design of high performance file processing web application

I'm trying to design a web app with ability to scale but can't wrap my heads around few concepts. I want to design it right but im not a experienced programmer, i have more of a system engineering ...
0
votes
0answers
28 views

How to upload huge data into SimpleDB quickly? [migrated]

I have a 2GB text file. I want to upload this into Amazon SimpleDB. I am using SDBExplorer to bulk upload the data. However the upload process is taking a lot of time. You can only upload around 25 ...
4
votes
3answers
213 views

Big Data: Can it be pre-processed?

My question is about "big data". Basically, big data involves the analysis of a large amount of data to make meaningful insights from it. I would like to know: Whether or not large amounts of data ...
4
votes
3answers
1k views

Why Big Data Needs To Be Functional?

I started working on a new project lately related to Big Data for my internship. My managers recommended to start learning functional programming (They highly recommended Scala). I had a humbled ...
0
votes
2answers
103 views

finding patterns into logs

I am trying to put together a way to figure out if incidents occurred based on log content. Typically, on log (or db table) would contain a list of transactions composed as follow: {Timestamp} ...
1
vote
2answers
642 views

Data Aggregation of CSV files java

I have k csv files (5 csv files for example), each file has m fields which produce a key and n values. I need to produce a single csv file with aggregated data. I'm looking for the most efficient ...
0
votes
0answers
67 views

Searching in a large dataset

I am working on a model of social interactions in mice. I have mice and boxes and a simulation that outputs which mouse stays in which box during which time period. The problem is how to obtain, in ...
13
votes
4answers
9k views

How to learn Cloud Computing and Big Data at home? [closed]

I want to learn Cloud Computing and Big Data at home. Is it possible to learn these technologies on home PC? Which technologies to learn in Cloud Computing? Which technologies to learn Big Data ...
1
vote
1answer
151 views

How to cross-reference many character encodings with ASCII OR UTFx?

I'm working with a binary structure, the goal of which is to index the significance of specific bits for any character encoding so that we may trigger events while doing specific checks against the ...
0
votes
1answer
122 views

QFS (Quantcast File System): Scalable for medium “big data” problems or only for extremely large

I am doing some investigating and research into programming "big data", and am particularly interested in QuantCast (QFS) because it is written in my own favourite programming language, C++. Looking ...
1
vote
0answers
155 views

What's a good approach for updating millions of rows independently?

I have a MongoDB database with millions of users in collection. An aggregation function returns millions of results with the following format: Array ( [_id] => Array ( [user] => MongoId ...
2
votes
1answer
193 views

Experimenting with “big data” and map reduce

I was thinking about experimenting a bit with using mapreduce and such on a dataset we have to see if we can benefit from it in any way. What route should I go if I want to be able to instantly, ...
4
votes
5answers
911 views

Suggested Web Application Framework and Database for Enterprise, “Big-Data” App?

I have a web application that I have been developing for a small group within my company over the past few years, using Pipeline Pilot (plus jQuery and Python scripting) for web development and ...
0
votes
0answers
121 views

Need server suggestion to handle Twitter API

I am working on generating some statistics by using twitter trends and streaming API. ( I have adjusted keywords such that traffic I get from twitter daily is of max size 1GB) I was currently ...
21
votes
4answers
918 views

What is the definition of “Big Data”?

Is there one? All the definitions I can find describe the size, complexity / variety or velocity of the data. Wikipedia's definition is the only one I've found with an actual number Big data ...
4
votes
4answers
1k views

NoSQL and BIG DATA

I am doing an internship on Big Data technologies so I am new to this area. My question is about the use of NoSQL in the Big Data architecture. Do we need always to use a distributed storage (like ...
0
votes
2answers
413 views

Algorithms for data structures in distributed system

The hash table data structure can be easily spread across multiple machines with a simple algorithm to distribute the keys: machine_to_query = item_key % machine_count When you want to read and ...
6
votes
3answers
1k views

Python in Big Data?

Can python be efficiently implemented in big data field? To be precise I am building an web app that analyses really big data in medical health care field consisting of medical history and huge ...
3
votes
2answers
542 views

How does Google store search trends in backend?

Google trends shows what query has been searched how many times and some other properties of the said query. But how is this data stored in a database? Storing a new row for every search does not ...
1
vote
2answers
145 views

Using replacement to get possible outcomes to then search through HUGE amount of data

I have a database table holding 40 million records (table A). Each record has a string a user can search for. I also have a table with a list of character replacements (table B) i.e. i = Y, I = 1 ...
1
vote
1answer
593 views

Java BufferedReader vs Separate Producer consumer thread

I have a very big file delimited by some sequence of characters '*L*I*N*E'. The file will be of the order of 250G. And each line comes around 600bytes to 1000 bytes. I will be performing the following ...
1
vote
1answer
254 views

Developing an analytics's system processing large amounts of data - where to start

Imagine you're writing some sort of Web Analytics system - you're recording raw page hits along with some extra things like tagging cookies etc and then producing stats such as Which pages got most ...
3
votes
1answer
228 views

Tools for Operating on Large Amounts of Text Data

I need to handle and process ~5 million news articles, an amount small enough to fit on a commodity desktop but too large to process serially. Thus far, I have been using Python/pickle for ...
11
votes
3answers
1k views

Choose C++ or Java for applications requiring huge amounts of RAM? [closed]

I'm thinking of scientific applications that are mostly processor-bound and heavy on heap usage (at least several gigabytes). Any other time of the year I would happily go with C++, but in this case I ...
2
votes
2answers
4k views

Interview questions to expect for Big Data position [closed]

A lot of new Big Data jobs are popping out recently. What sort of technologies could one learn to get better familiar with this new field? Are there any interview questions in particular that may ...