paul-rogers commented on issue #1829: DRILL-7096: Develop vector for canonical Map<K,V> URL: https://github.com/apache/drill/pull/1829#issuecomment-515716535 here seems to be little documentation of the design or implementation: I find myself having to reverse engineer a design from the code. Would it be helpful for other reviewers if we included a bit of explanation? In particular, what is the structure of the new vector? The true map vector seems to have a user-defined key and value type. Does this mean keys can be integers or maps? Do the proposed map functions handle non-Varchar keys? Do they handle repeated or map keys? If not, should the implementation restrict key types? How do we handle varying value types? (I have a map with, say, {name: "Fred", balance: 123}. Would the user specify a Union? Have we fixed the many existing problems with the Union type? Or, is the true map meant to be like a Java map: Map<K,V>, and not a Python or JSON map with string keys and values of any type? A bit of documentation (a README file, a package-info file or just a Javadoc explanation in the vector class) would help answer these questions.
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
