Hadoop is one of many tools a hiring manager may specifically inquire about. Being asked about your experience with a specific tool or language is most likely an indication that it is something used on the job. Prepare for the interview by researching which languages and tools they use at the hiring organization. In most cases, this would be outlined in the job description. If you have little or no experience with the specified tools or languages, conduct research to at least show you have some knowledge of them. If you do have experience with the tool, make sure the explanation of your project reflects your knowledge of its capabilities.
