How to migrate change Hadoop 1 x maven project to Hadoop 2 x

Question

Currently I have a maven project which is based on Hadoop 1.2.1 and I want to migrate my project from Hadoop 1.2.1 to 2.2. My old dependencies are as follows:

  <dependency>

    <groupId>org.apache.hadoop</groupId>

    <artifactId>hadoop-core</artifactId>

    <version>1.2.1</version>

</dependency>

I tried to change the version to 2.2, but it is not working. Can anyone help me out in migrating my project to Hadoop 2.2?

Answer 1

In Hadoop 2.2. most of the dependencies of Hadoop-core has been moved to hadoop-client. And also try to specify the version as 2.2.0 for Hadoop jars.

<dependency>

    <groupId>org.apache.hadoop</groupId>

    <artifactId>hadoop-client</artifactId>

    <version>2.2.0</version>

</dependency>