Tag: hql
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Apache Hive Deep Dive – Load Data from Local File System
Welcome to the first post of the series called “Apache Hive Deep Dive”. In this post we are going to explore what happens behind the scenes in HDFS when we issue the following commands in Hive: CREATE DATABASE CREATE TABLE LOAD DATA DROP TABLE DROP DATABASE In this exercise, the data will be loaded from the local file…
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Introduction To Apache Hive For SQL Programmers
I have always wondered how someone with SQL knowledge can work in a Big Data environment or to be more precise, in an HDFS environment. Can we use our SQL skills to analyze data? Do we have to learn Java or Map Reduce to do the analysis? After a few years of questioning, I thought of…