Do I need to reason why I use a particular technology in my research proposal? I have started doing a research related to NoSQL databases for the master's degree and I have submitted the research proposal.
Proposal evaluation results have been released and the examiner has added some comments.
My question is about one of his comment.
In my research I have mentioned that I am going to use Yahoo! Cloud Serving Benchmark (YCSB) for the evaluation process of the research. The examiner asks me to justify the appropriateness of use of YCSB for the performance assessment.
What does this mean? Does that mean I need to reason all the tools or technologies I have chosen to assist the research process?
The real reason for choosing YCSB is because it has been used in many recent past researches related to NoSQL databases and also there seems to have limited standard available bench marks in the field.
You have two (related) questions:


What does this mean?


This means you should explain why you suggest using YCSB (You already know the reasoning, given your last sentence.)


Does that mean I need to reason all the tools or technologies I have chosen to assist the research process?


No. If that were the case, the examiner would have asked you to. In general, researchers use direct/concise language. Do not assume that they actually/secretly want you to answer another question than the one they have asked you.