Tuesday, May 19, 2015

Chapter : 1 Hbase introduction


Hbase Introduction

Hbase is one of the component of hadoop built on top of HDFS and is ment for Real time random read/write. In against to the sequential file accessing of HDFS.

Hbase is opensource , distributed, scalable , fault tolerance , non -relational, multi-dimensional versioned, column oriented database which is built on top of BIG TABLES (BUILT ON THE ORIGIN OF GFS).


Google big tables ment for structured data only.
All the database will be organized by the means of tables only and whenever we inserting values in Hbase table for each and every values there will be a unique timestamp which will be generated by HBASE TABLES automatically.


HBASE is not a [part of default installatipon of hadoop and hence therefore we need to install it on top of hadoop only.

IN SVN when we insert data and from other location B modified it it creates version.
SVN
Input.log
Input_1.log
A has saved it =Input.log
Some modification done = SVN Framework generated another copy Input_1.log


Timestamp :- its a row and column orientesaction point where data is stored, multiple data can be stored on same timestamp.

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