How-To : Integrate Kafka with HDFS using Camus (Twitter Stream Example)
A step-by-step guide to building a Kafka-to-HDFS data pipeline using Camus and a Twitter stream. This guide is aimed at developers looking for a practical, detailed walkthrough.
How-To : Write a Kafka Producer using Twitter Stream ( Twitter HBC Client)
A step-by-step guide to building a Kafka producer that streams live tweets using Twitter’s Hosebird Client (HBC) and publishes them to a Kafka topic. This is a practical, developer-focused walkthrough with code, configuration, and troubleshooting tips.
How-to : Write a CoProcessor in HBase
Coprocessor is a mechanism which helps to move computations closer to the data in HBase. It is like a Mapreduce framework to distribute tasks across the cluster.
Hive : SORT BY vs ORDER BY vs DISTRIBUTE BY vs CLUSTER BY
In Apache Hive HQL, you can decide to order or sort your data differently based on ordering and distribution requirement. In this post we will look at how SORT BY, ORDER BY, DISTRIBUTE BY and CLUSTER BY behave differently in Hive. Let’s get started -
How-To : Use HCatalog with Pig
This post is a step by step guide on running HCatalog and using HCatalog with Apache Pig:
Hive Strict Mode
![Sort By vs Order By vs Group By vs Cluster By in Hive]/assets/uploads/2015/01/images.jpg)
What is Hive Strict Mode?
Hive Strict Mode (hive.mapred.mode=strict) enables Hive to restrict certain performance intensive operations. Such as:
How-To : Connect HiveServer2 service with JDBC Client ?
HiveServer2 (HS2) is a server interface that enables remote clients to execute queries against Hive and retrieve the results. The current implementation, based on Thrift RPC, is an improved version of HiveServer and supports multi-client concurrency and authentication. It is designed to provide better support for open API clients like JDBC and ODBC.
How-To : Configure MySQL Metastore for Hive ?
Hive by default comes with Derby as its metastore storage, which is suited only for testing purposes and in most of the production scenarios it is recommended to use MySQL as a metastore. This is a step by step guide on How to Configure MySQL Metastore for Hive in place of Derby Metastore (Default).
What is POODLE vulnerability and How does it affect you ?
What is POODLE?
It stands for “Padding Oracle On Downgraded Legacy Encryption.” This means a protocol downgrade that allows exploits on an outdated form of encryption. It was first explained in Google Security Advisory.
Java : What does finalize do and How?
finalize method in the Object class is often a point of discussion regarding whether it should be used or not. Below are some important pointers on the finalize method: