Internals of Read and write operation in hadoop
In previous post we learned about HDFS building blocks namenode, datanode , secondry namenode. In this post, I will be discussing read and ...Read More
Python Input and Output
In order to accept user input via console and display result, python has in built methods like raw_input() and print(). We have seen uses of...Read More
Oracle JDK installation in Ubuntu
Since Oracle’s Sun Java JDK packages has been removed from the Ubuntu partner repositories. Now we are left with two option: either go with...Read More
NameNode, DataNode and Secondary NameNode
In previous post we learned that, NameNode(NN) and DataNode(DN) are main building block of HDFS(Hadoop Distributed File system).In this post...Read More
Git Commands Recap : Tagging, Branching, Merging
Git Tagging : git tag <tag_version> git tag command is used to tag a given commit with version/tag name. Below command open defau...Read More
Strings interview questions
Reverse a string in java via Iterative and recursive approach.Read More
Arrays interview questions
Write code snippet for displaying matrix elements in a spiral order Create a matrix with alternating rectangles of O and X Find minimum ...Read More
Big data evolution - Relational model to Hadoop ecosystem
Database technologies has went through dramatic transformation from pre-stage flat-file system to relational database system(RDBMS). Undoub...Read More
Git Commands Recap : Add, rm, commit, diff
Git Add : git add <file_name1>,<file_name2> If a file need to be committed to repo, it needs to be brought first to staging...Read More
Git Commands Recap : init. clone, status, log (--oneline, --stat, --patch) , show
Git Init : git init Create/Initialise git repository : Command < git init >: "init"command is short for "initial...Read More
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