Post 52 | HDPCD | The conclusion

Hi everyone. Finally, we have reached the end of this tutorial series. It's been so long. We started this journey together on January 15th, 2017, and, 276 days later this beautiful journey is coming to an end. But, we do not need to worry, because, I am working on something new and would love to … Continue reading Post 52 | HDPCD | The conclusion

Post 48 | HDPCD | Printing the execution plan of a Hive query

Hello, everyone. Welcome to one more tutorial in the HDPCD certification series. In the last tutorial, we saw how to enable vectorization in Hive. In this tutorial, we are going to see how to print the execution plan of a Hive query. Let us begin, then. This is one of the simplest tutorials in this certification series. In … Continue reading Post 48 | HDPCD | Printing the execution plan of a Hive query

Spark : map() and flatMap()

Hi guys, Hope you are finding the tutorials helpful. In this tutorial, we are going to see the two transformations which we are going to use a lot while learning Spark. Both map() and flatMap() functions are transformations in Spark. We will discuss these two transformations one by one. Then will see the similarities between … Continue reading Spark : map() and flatMap()

Spark + Python : Passing Function

In this tutorial, we are going to various ways in which we pass functions in Spark using Python API. I have shown two ways in which functions can be called/created (for user-defined function). We are going to do the comparison based on filtering capabilities of Spark. For doing this I have created a user-defined function called containsMilind() which … Continue reading Spark + Python : Passing Function

Spark + Python : Union Operation

In this tutorial, we are going to see how the Union operation works. In English Language, union means combining two things. Here, we are also going to do the same thing. The difference is, we are going to attach two RDDs using Union operation. We are using the same input.txt file we used in last tutorial. … Continue reading Spark + Python : Union Operation