The Hadoop Distributed File System (HDFS) was developed following the distributed file system design principles. Running on commodity hardware, HDFS is extremely fault-tolerant and robust, unlike any other distributed systems.
Comparing dates (or datetime objects) in Python is very easy. The basic comparison operators (==, !=, <>, >, <, >=, <=) are overloaded for the datetime object, so comparing dates is very intuitive and quick.
Apache Hadoop is a java based open source software. Basically, it’s a framework which is used to execute batch processing jobs on huge clusters. It is designed so that it can be scaled from a single server to hundreds of…
Sometimes we have to work with dates and times. I use dates less than times because with times you can measure code execution time which is sometimes essential (for my website scraping book’s performance measurement is the core part I…
Now we arrived at object-oriented programming. This has (had) its hype where every language was designed around objects and Python developer Guido van Rossum thought “Why not?” and added classes to support object-oriented development. Some python evangelists think this was…
We have seen this example previously. There I included a lot of loops to handle user input and the main logic… Now it is time to refactor the application to use functions. This should make the code readable and we…
A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified event occurs. Row level DML triggers are invoked for every row the specified DML statement touches (insert/update/delete). Since the database has to execute the trigger’s execution…
The tech growth in the last decade has been so great that the things once considered inconceivable are now mainstream and the tasks too difficult that required a special skill set can now be completed by almost anyone. In the…
Now we have learned the basics of Python programming: variables, collections and loops. If you have followed the examples and the tutorial you might feel that sometimes we use too much code and it can be leveraged a bit. But…
Now let’s write a script which implements a basic “Guess the number” game. The rules of the game are: