Connecting to Athena via R

问题

I am referring to this article for connecting R to Athena.

When defining the driver, I am getting the following error :

Error in .jfindClass(as.character(driverClass)[1]) : class not found

I did some research and I arrived at this page. The accepted answer has a comment stating the same problem. However, the solution provided (i.e. restarting R) didn't work.

I have written the following code till now.

library("pacman")
pacman::p_load("RJDBC")
pacman::p_load("dplyr")

# Downloading Athena driver to the working directory
URL <- 'https://s3.amazonaws.com/athena-downloads/drivers/AthenaJDBC41-1.0.0.jar'
fil <- basename(URL)
if (!file.exists(fil)) download.file(URL, fil)

# Defining driver
drv <- JDBC(driverClass="com.amazonaws.athena.jdbc.AthenaDriver", fil, identifier.quote="'")

I am using RStudio and I am running it on Windows. Any suggestions on how to resolve this problem will be highly appreciated.

回答1:

The download.file command writes in character mode by default, not binary. You should specify binary mode:

download.file(URL, fil, mode="wb")

来源：https://stackoverflow.com/questions/42683348/connecting-to-athena-via-r