To connect to Hadoop using Java

[#1]

Hi,

How to connect to Hadoop in a Java program. Here are few details: I am taking input from the user in HTML form, using JSP to process the form data. I want to connect to Hadoop to fetch some data based on form inputs. How can I connect to Hadoop using Java in this case?

Thanks

Hari

[#2]

Connect to which part of Hadoop? HDFS, Hive, HBase?

If HDFS, you can use WebHDFS from any programming language with an HTTP client, or you can include the hadoop-common library in your code via Maven, for example.

If HBase, there are Java clients you can find.

If Hive, you can use JDBC.