Installing Scala in RHEL / Cent OS

To install Scala, it requires the Java run time version 1.8 or later. Once we have Java installed and configured, we can download the Scala distribution in RHEL or Cent OS using this command [Read More]
Tags: Configuring, Installing, Java, Scala, linux, RHEL, Cent OS

Save data to Cassandra tables using Apache Spark

Apache Cassandra is an open source distributed database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure. Cassandra offers robust support for clusters spanning multiple datacenters, with asynchronous masterless replication allowing low latency operations for all clients.... [Read More]
Tags: Cassandra, Apache Cassandra, Spark, Apache Spark, Big Data, BigData, Hadoop, Java, push, rdd, save, save into table, spark java, Table

How to use existing HBase table in Apache Phoenix

Apache Phoenix is an open source, relational database layer on top of noSQL store such as Apache HBase. Phoenix provides a JDBC driver that hides the intricacies of the noSQL store enabling users to create, delete, and alter SQL tables, views, indexes, and sequences; upsert and delete rows singly and... [Read More]
Tags: Apache HBase, Apache Phoenix, HBase, Phoenix, reuse, SELECT, Table, View

Installing Apache Solr

Apache Solr is an opensource search platform powered by Apache Lucene written in Java. Solr is standalone search server with REST-like API. We index documents in it via JSON, XML, CSV or binary over HTTP. We query it via HTTP GET and receive JSON, XML, CSV or binay results. [Read More]
Tags: Configuring, Indexing, Installing, Search, Solr, Hadoop, BigData

HBase Shell Commands

HBase is free, open-source software from the Apache Foundation. It is a cross platform technology, so we can run it on Linux, Windows or OS/X machines and also can be hosted on Amazon Web Services and Microsoft Azure. [Read More]
Tags: HBase, hbase shell, commands, create, describe, list, namespace, status, whoami