BLOG – Page 17 – Hadoop In Real World

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February 17, 2014

One Of Several Explanations To “could only be replicated to 0 nodes” Error

There could be several reasons when you see “could only be replicated to 0 nodes” message in your exception when you are trying to write something […]
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-592617617b09f072579485/]   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 […]