Troubleshooting – Hadoop In Real World

Troubleshooting

November 1, 2017

Troubleshooting Memory Issues with MapReduce Jobs

We hosted this webinar on Saturday, October 28th 2017. In this webinar we discussed the most common memory related issues with MapReduce jobs and how to […]
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-5a37ebc2512fd772593430/] 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 […]
June 23, 2016

Missing Artifact JDK Tools Jar

Missing Artifact JDK Tools Jar Some versions of Maven / eclipse will give you the below error in your pom.xml [crayon-5a37ebc253de4727153418/] It is very easy to […]