I have been using it for five years. 

I have been using the solution for three and a half years.

I have been using Apache Hadoop for more than three to four years.

I've been working with Apache Hadoop for ten years. I started my career with Hadoop. I've worked with it at Infinia, Microsoft, and AWS, for a total of about eight years.

We've started using Apache Hadoop since 2011.

I have four years of experience with Apache Hadoop.

I have been using Apache Hadoop for six months.

We have been working with this solution for two and a half to three years.

Two-plus years.

I have used Apache Hadoop for three years, and I use Hadoop's open-source version.

I have been using Apache Hadoop for ten years. Initially, we worked directly, but now we use Cloudera and Bigtop. We are the solution provider.

This version was released in January 2016, but I have been working with the Apache Hadoop platform for a few years now.

I have been using this solution for about seven or eight years. 

I've been using the solution for four years.

2.5 years

I have been using Apache Hadoop for approximately nine years.

I've been using Hadoop for about eight years. I'm not sure exactly.

I worked with Apache Hadoop for about five years.

We've been working with the solution for three to four years.

I've been using the solution for about five years now.

I have been using this solution for roughly five years.

I've been using the solution for five years.

I have used Hadoop for over three years.

I have been using Apache Hadoop for two years.

I've been using the solution for seven years.