Learning HBase
Learning HBase – A nice book from my friend that I can refer to you. Shashwat Shriparv November 2014 Learn the fundamentals of HBase administration and development with the help of real-time scenarios About This Book Learn how HBase works…
PostgreSQL Replication
Refer to http://dbversity.com/postgresql-installation/ for PostgreSQL Installation procedure on your both Master & Slave servers. Replication Now we are testing something that called hot standby replication. Configure the Master Server We will begin by configuring our master server. All of these…
Creating a view on the fly from code using Node.JS
The Code : // load the Couchbase driver and connect to the cluster var couchbase = require(‘couchbase’); var cluster = new couchbase.Cluster(‘localhost:8091’); //it is important to make this async call as otherwise you will try create the //view before the…
NodeJS And Couchbase
The first thing you got to do is download and install Couchbase for your OS. Navigate to http://www.couchbase.com/download and download Couchbase for Mac OSX. The install is very straight forward and easy to do and well documented. Next we need…
Failed to create a table in Hive backed by HBase ?
Failed to create a table in Hive backed by HBase. Will it fix the error to copy hbase-site.xml into /etc/hive/conf/ ? Often when you use Impala with Hbase and first you need create metastore from Hive. $ hive –auxpath /opt/cloudera/parcels/CDH-4.5.0-1.cdh4.5.0.p251.30/lib/hive/lib/zookeeper.jar,/opt/cloudera/parcels/CDH-4.5.0-1.cdh4.5.0.p251.30/lib/hive/lib/hbase.jar,/opt/cloudera/parcels/CDH-4.5.0-1.cdh4.5.0.p251.30/lib/hive/lib/hive-hbase-handler-0.10.0-cdh4.5.0.jar,/opt/cloudera/parcels/CDH-4.5.0-1.cdh4.5.0.p251.30/lib/hive/lib/guava-11.0.2.jar…
MongoDB Bench marking/Limitations
Most of us have these questions in mind when we go MongoDB on boarding – here you go. Max No. of Shards :- ————————— The MongoDB software imposes no limit here, so theoretically the number of shards can be infinite….
MongoDB ODBC Driver (by Easysoft Ltd.)
Real-time, SQL access to MongoDB from BI, Analytics and Reporting applications As part of our commitment to bringing SQL functionality to NoSQL databases, we are pleased to release a beta version of our MongoDB ODBC Driver. Our driver allows you…
Hadoop Streaming
Hadoop Streaming —————- Hadoop streaming is a utility that comes with the Hadoop distribution. The utility allows you to create and run Map/Reduce jobs with any executable or script as the mapper and/or the reducer. For example: $HADOOP_HOME/bin/hadoop jar $HADOOP_HOME/hadoop-streaming.jar…
Hadoop Archives & MR
Overview ——– Hadoop archives are special format archives. A Hadoop archive maps to a file system directory. A Hadoop archive always has a *.har extension. A Hadoop archive directory contains metadata (in the form of _index and _masterindex) and data…
MongoDB Connector for Hadoop
Purpose The MongoDB Connector for Hadoop is a library which allows MongoDB (or backup files in its data format, BSON) to be used as an input source, or output destination, for Hadoop MapReduce tasks. It is designed to allow greater…