Hadoop installation modes

At the time of writing this article, there are three modes of installation available in Hadoop.

 

 

a.   Local Mode: Hadoop setup is done in your computer. In local mode, only Map reduce component will get installed in your system, other two core components HDFS, YARN will not get installed. This mode use local file system to store the data, instead of HDFS. This mode can be used for development purpose.

b.   Pseudo distributed mode: Hadoop can run on a single computer in pseudo distributed mode. All the three components (Map reduce, HDFS and YARN) will get installed in this mode. You can use this mode for testing and debugging use cases.

c.    Fully distributed mode: This is the actual production environment, where Hadoop runs on a cluster of machines.

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