Your colleague, who is new to Hadoop, approaches you with a question. They want to know how best to access their data. This colleague has a strong background in data flow languages and programming.Which query interface would you recommend?
The web analytics team uses Hadoop to process access logs. They now want to correlate this data with structured user data residing in a production single- instance JDBC database. They collaborate with the production team to import the data into Hadoop. Which tool should they use?
What does the R code -z <- f[1:10, ]do?
In R, functions like plot() and hist() are known as what?
Review the following code:SELECT pn, vn, sum(prc*qty)FROM sale -GROUP BY CUBE(pn, vn)ORDER BY 1, 2, 3;Which combination of subtotals do you expect to be returned by the query?
You are using MADlib for Linear Regression analysis. Which value does the statement return?SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;
