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January 19, 2017

DataNode process killed due to Incompatible clusterIDs error

DataNode process killed due to Incompatible clusterIDs error This blog post will describe how to address Incompatible clusterIDs with DataNodes. [crayon-59ec350ec8dee087368542/] Problem The problem could be […]
January 16, 2017

FSNamesystem initialization failed

FSNamesystem initialization failed FSNamesystem initialization failed is a common error Hadoop users gets especially if there are trying to set up of a Hadoop cluster for […]
January 12, 2017

Hadoop safemode recovery – taking too long!

Hadoop safemode recovery – taking too long! Any time NameNode is restarted or started, NameNode first goes into maintenance state called Safe Mode. When NameNode is […]
January 9, 2017

There are 0 datanode(s) running and no node(s)

There are 0 datanode(s) running and no node(s) You are trying to write a file to HDFS and this is what you see in your datanode […]
October 9, 2016
Hadoop Administrator In Real World - Course Coverage

Hadoop Administrator In Real World – Course Coverage

Hadoop Administrator In Real World – Course Coverage We launched Hadoop Developer In Real World course on Nov 2015 and we got excellent response from the […]
October 1, 2016
what-employers-expect-from-hadoop-administrators

What employers expect from Hadoop Administrators?

What employers expect from Hadoop Administrators? In this post we will discuss what employers expect from Hadoop Administrators. We also have a video version of this post, […]