Use Cases Of MongoDB

23 January 2014

MongoDB is a relatively new contender in the data storage circle compared to giant like Oracle and IBM DB2, but ...

Introduction to Impala

22 January 2014

Impala in terms of Hadoop has got the significance because of its, Scalability Flexibility Efficiency What’s Impala? Impala is… Interactive SQL–Impala is typically 5 to 65 ...

Free Cloudera Impala Book

21 January 2014

Get free Cloudera Impala, in PDF format, for free from the Cloudera website, in association with the Strata Conference and ...

Hadoop Interview Questions – HDFS

21 January 2014

Are you planning to pursue a career in Hadoop or looking out for a job opportunity in Hadoop? Here is ...

Hadoop FS Shell Commands

18 January 2014

Hadoop file system (fs) shell commands are used to perform various file operations like copying file, changing permissions, viewing the ...

Data Export from Hadoop MapReduce to Database

16 January 2014

Hadoop has become a huge part of Data Warehouse in most companies. It is used for a variety of use-cases: ...

Pig Interview Questions

13 January 2014

Can you give us some examples how Hadoop is used in real time environment? Let us assume that we have an ...

Hadoop Cluster Commissioning and Decommissioning Nodes

10 January 2014

To add new nodes to the cluster: 1. Add the network addresses of the new nodes to the include file. hdfs-site.xml <property> <name>dfs.hosts</name> <value>/<hadoop-home>/conf/includes</value> <final>true</final> </property> mapred-site.xml <property> <name>mapred.hosts</name> <value>/<hadoop-home>/conf/includes</value> <final>true</final> </property> Datanodes that ...