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Tag: Hadoop Administration

Configuring Trash in HDFS

Trash Configuration in Hadoop
Apache Hadoop Provides a trash feature. Trash feature is very helpful for Hadoop Administrators in case of accidental deletion of files and directories. If trash is enabled and a file or directory is deleted, the file is moved to the .Trash directory in the user’s home directory instead of...
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Configuring Rack Awareness on Hadoop Using Centos

Rack Awareness in Hadoop
This blog gives you information about Rack Awareness in Apache Hadoop. HDFS block placement uses rack awareness for fault tolerance by placing one block replica on a different rack. This ensures data availability during network switch failure or a partition within the cluster. Rack awareness is very helpful in...
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Commissioning and Decommissioning of Datanode in Hadoop

Decommissioning and Commissioning
Commissioning of nodes stand for adding new nodes in current cluster which operates your Hadoop framework. In contrast, Decommissioning of nodes stands for removing nodes from your cluster. This is very useful utility to handle node failure during the operation of Hadoop cluster without stopping entire Hadoop nodes in...
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