Most people used to think that the shell commands hdfs dfs and hadoop fs were interchangeable. They list the directories’ contents in question. But there
Author: SHAFI SHAIK
Hi, this is Shafi Shaik, Microsoft Solutions Specialist in Data platform as well as in Data Management & Analytics. I am a certified associate in Oracle SQL*Plus and extensively trained in MongoDB Administration. My current role is Database administration with hands-on expertise in almost all relational databases namely Microsoft SQL Server, MySQL, Oracle SQL*Plus, PostGreSQL & Teradata. I'm also specialized in database development, warehousing, traditional data analysis and Big Data analysis.
It’s all about Map Reduce – Part-2
Click here for the previous part. Reducer Phase: Record writers, a function in the reducer phase of processing, take the output from the mapper phase
It’s all about Map Reduce – Part-1
Big Data definition: Big data is defined as data with increased variety, arriving in increasing volumes, with incredible velocity, a high degree of variability, and veracity, all of which
Modes of operation in HDFS
Hadoop is an open-source framework that is primarily used for data storage, management, and analysis across massive datasets on commodity hardware clusters, making it a
HDFS Federation vs High Availability
This blog post will compare and contrast HDFS Federation and High Availability, two approaches that were designed as a solution for the NameNode single point
Apache Hive Questions and Answers-1
The collection of interview questions for Apache Hive is available here. I don’t claim full ownership of the questions and answers because the majority of
Big Data & SQL 