Ganglia Cluster Monitoring: monitoring spark cluster

Ganglia is cluster monitoring tool to monitor the health of distributed cluster of spark and hadoop. I know you all have question that we already have a Application UI (http://masternode:4040) and Cluster UI (http://masternode:8080) then…

Working with Nested Aggregation of Elasticsearch

First of all we need to understand aggregation in ElasticSearch.In Elasticsearch an aggregation can be seen as a unit of work that builds analytic information over a set of documents.It is a powerful tool for build complex summaries of the data.

File upload using akka-http in Scala

Lets begin with some introduction of Akka-http first.

Akka HTTP is a layer to expose Actors to the web via HTTP and to enable them to consume HTTP services as a client. It is not an HTTP framework, it is an Actor-based toolkit for…

Data Driven Test Automation with Apache POI (Part-1)

What is Data Driven Test Automation?

To test the functionality of an application it is requires to test with multiple input values. Data driven test automation allows to create test scripts where test data or…

Transfering Data from Couchbase to the ElasticSearch (Transport-Couchbase Plugin)

If we want to transfer the data persisted in your Couchbase to ElasticSearch and use the power of inverted indexing of Elastic Search along with Couchbase. Then we can do this in easy steps.

Introduction to JNI- Java Native Interface

The Java Native Interface (JNI) is a native programming interface in JDK. It is used to call C/C++ libraries from the libraries written in Java and vice-versa. This is a java API which bridges the gap between C/C++ and Java.

Multipart/form-data submit through javascript in Play Framework

Normally when we submit any multi-part form in Play Framework that time in the controller have to mention redirection action which refresh the whole page and it gives an extra load on the network.

Vulnerability scanning with metasploit

Hola!! As you all aware of that vulnerabilities can cost you much more and as a developer you don’t need your website to have vulnerabilities (at least I am :P ).
And for testing for loopholes in your application can be painful, So here I am to show you a quick…

Spark-shell on yarn resource manager: Basic steps to create hadoop cluster and run spark on it

In this blog we will install and configure hdfs and yarn with minimal configuration to create a local machine cluster. After that we will try to submit job to yarn…

Sample akka dispatcher configuration

Akka dispatchers plays important role in application performance. After reading this blog you will be able to configure and use different dispatchers for your application. I have tried to make it as simple as possible so that you can easily start working on akka…