Vivek Mishra's Blog

Perform CRUD over HBase using HBaseTestingUtility/EmbeddedHBase


EmbeddedHBase, Something similar to EmbeddedCassandraService. I have been looking for something like this since last year(March 2011) to incorporate the same in Kundera. HBaseTestingUtility really helped me to achieve continuous … Continue reading

May 3, 2012 · 4 Comments

How to: CRUD and JPA association handling using Kundera


Recently we have released Kundera-2.0.5. This post is all about demonstrating how to perform CRUD and association handling using kundera. Kundera is now enabled to use secondary index support provided … Continue reading

February 13, 2012 · 21 Comments

Setup Kundera with standalone Cassandra


  Setup Kundera with standalone Cassandra: Note: Currently Kundera supports Cassandra 0.8.2. You can download Cassandra releases from here. 1)      Setup an environment variable “CASSANDRA_HOME” to Cassandra home directory (e.g. … Continue reading

September 1, 2011 · 3 Comments

Tesseract-Ocr/grails installation over amazon EC2.


Tesseract-Ocr/grails installation over amazon EC2. Before we proceed: Before proceeding to installation, first thing is to choose right AMI instance for your installation. There are number of cloud instance available … Continue reading

August 25, 2011 · 3 Comments

Cassandra Play :Kundera ORM


If need more information on cassandra, please visit :Cassandra In brief, Kundera is an ORM based solution over Cassandra. Kundera provides you a way to map your existing java objects … Continue reading

July 12, 2011 · 5 Comments

Hector-Kundera


Feature Kundera GORA Hector ORM Yes Yes Yes JPA Compliant Yes No – Annotation Based Yes No Yes Index Support Yes Yes NO Second Level Cache Yes(Optional) No No NoSql … Continue reading

February 12, 2011 · 2 Comments

Hive/HBase integration


Assuming you are aware of Hive and HBase basic concepts, my POC around Hive/HBase integration is : 1) Provide real time analytics on HBase. 2) Indexing mechanism. 3) Load Data from HDFS to HBase using Hive … Continue reading

November 24, 2010 · 2 Comments

Ubuntu Play:deletion of /etc/shadow or /etc/password corrupted my env.


Never mess with /etc/shadow. By mistake I have deleted it and restoring everything takes ages. I landed myself into series of troubles. 1)      Login was not possible. 2)      After that … Continue reading

October 21, 2010 · Leave a Comment

Working with Sqoop/Hadoop (with example)…


Some days back started looking into Sql to Hadoop data transformation.(Relational databases->nosql). I tried my hands on Sqoop(Sql to Hadoop).http://www.cloudera.com/blog/2009/06/introducing-sqoop/. Reason for this post is i am not able to find any definit link to … Continue reading

October 1, 2010 · 1 Comment

First encounter with Hadoop


I can say that changing my employer to Impetus after more than 5 years is a good decision. Now I am new learning path. HPC(high performance computing) team in labs is doing … Continue reading

September 15, 2010 · 2 Comments
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