Category: Java

In the previous we have seen how to read a file from HDFS. In this blog we will see how to write a file from local file system

Hadoop does not use the default java serialization framework for performance reasons. It has it’s own serialization format writables , which is fast and compact but not interoperable. For that hadoop

Hadoop Supports many input/output file formats. In this blog we will see how to read a text file and we will save the results in Sequence file format.

In this blog we will see how to setup unit testing for a java project. Fist create a java project and a simple class. I created a simple