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February 8, 2014

Configuring MultipleInputs-InputFormats-Mappers In Oozie MapReduce Action

This post explains how to write a Oozie MapReduce action with Multiple Inputs and how each Inputs are configured to use different InputFormats and Mappers Lets […]
February 2, 2014

Fixing java.io.IOException: Incompatible namespaceIDs

This post explains the fix when you see the below error when starting Datanode.   [crayon-587e334670d39634117076/]   This is a well documented issue. Check this JIRA […]
January 26, 2014

Troubleshooting Hive Action In Oozie

In this post we are going to troubleshoot a failing Hive action in Oozie. The Hive action we have is very simple, it tries to add […]
January 15, 2014

Stream Data From Twitter To Analyze Using Hadoop

If you are learning Hadoop, you are probably tired of counting words and want to try some real analysis using real data. Amazon public dataset is […]